KR102143694B1 - Noncontact Diagnosing Device, Operating Method and Operating Program thereof - Google Patents

Abstract

A non-contact diagnostic device and operation method and operation program are provided. The non-contact diagnostic device includes a punching unit that presses the plated test piece in the thickness direction of the test piece, a jig that holds the plated test piece in the surface direction of the test piece, and controls the degree of folding of the test piece, and presses the plated test piece in the thickness direction of the test piece through the punching unit. A control unit for controlling the folded test piece to form a folded area by folding the specimen to a predetermined degree through the jig and an analysis unit providing information on whether or not plating is peeled off of the folded area.

Description

Noncontact Diagnosing Device, Operating Method and Operating Program thereof

The present invention relates to a non-contact diagnostic device, an operating method, and an operating program, and more particularly, to a non-contact diagnostic device, an operating method, and an operating program for analyzing whether plating peeling or cracking occurs on a test piece operating in a non-contact manner.

Today, the demand for galvanized steel sheets such as electric galvanized steel sheets and hot-dip galvanized steel sheets is increasing for home appliances, ships, automobiles, and construction materials. However, the coated steel sheet has a problem in that the frictional stress increases during processing because the friction coefficient of the plating layer is larger than that of the general steel sheet, resulting in a peeling phenomenon of the surface.

However, there are still many difficulties in evaluating and quantifying the peeling phenomenon of the plating layer. Specifically, there is an evaluation method using taping as an evaluation method commonly used today. The evaluation method is a method of judging the amount of peeling off by attaching a tape with the naked eye of an inspector. However, the above evaluation method has a disadvantage in that it is difficult to secure reproducibility and reliability because a difference in judgment criteria may occur between workers because the operator directly sees and judges with the naked eye.

On the other hand, in order to improve the evaluation method using a tape, an evaluation method of measuring the weight of the peeled metal by measuring the difference in weight before and after the banding test is being studied. However, the method also has a disadvantage in that a large deviation occurs depending on test conditions such as punching pressure and punching speed of the inspector.

One technical problem to be solved by the present invention is to provide a non-contact diagnostic device capable of providing quantitative information on whether plating is peeled off and whether cracks are generated.

Another technical problem to be solved by the present invention is to provide a method for quantitatively measuring whether plating is peeled off and whether cracks are generated.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problem, the present invention provides a non-contact diagnostic device and operation method and operation program.

According to an embodiment, the non-contact diagnostic device includes a punching portion for pressing the plated test piece in the thickness direction of the test piece, a jig for gripping the plated test piece in the surface direction of the test piece, and adjusting the degree of folding of the test piece, and the thickness of the test piece through the punching portion. It may include a control unit that presses in the direction and controls the pressed test piece to form a folded area by folding the pressed test piece to a predetermined degree through the jig, and an analysis unit providing information on whether or not plating is peeled off of the folded area.

According to an embodiment, the non-contact diagnostic device may provide information on whether the plating is peeled off according to an amount of plating remaining on the separated tape after being adhered to the folded area.

According to an embodiment, in the non-contact diagnosis apparatus, when the control unit folds the test piece to the predetermined degree, the test piece may have a “U” shape.

According to an embodiment, the non-contact diagnostic device controls the test piece formed with the folded area to be unfolded at a predetermined angle through the jig, and the analysis unit is adhered while the folded area is formed, and the predetermined angle is unfolded. Information on whether or not the plating is peeled may be provided according to the amount of plating remaining on the separated tape.

According to an embodiment, the non-contact diagnostic device may further provide information on whether or not cracks of the test piece have occurred through an image of the folded area of the test piece.

A method of operating a non-contact diagnostic device according to an embodiment of the present invention comprises the steps of bending the test piece by pressing the plated test piece in a thickness direction while being gripped in a plane direction, and folding the bent test piece at a predetermined angle to form a fold area. And providing information on whether or not plating is peeled off the folded region.

According to an embodiment, the method of operating the non-contact diagnostic device includes: bonding a tape to the folded area, separating the bonded tape, and determining whether or not the plating is peeled according to the amount of plating remaining on the separated tape. It may include providing information.

According to an embodiment, the method of operating the non-contact diagnostic device includes attaching a tape to the folded area. The steps of unfolding the test piece to which the tape is adhered at a predetermined angle, separating the adhered tape from the unfolded test piece, and providing information on whether the plating is peeled according to the amount of plating remaining on the separated tape It may contain more.

According to an embodiment, the method of operating the non-contact diagnostic device includes the steps of bending the test piece by being gripped in a plane direction and pressing the test piece in the thickness direction, folding the bent test piece at a predetermined angle to form a fold area, and the It may include providing information on whether or not cracks in the test piece have occurred through the image of the folded area.

According to an embodiment, the method of operating the non-contact diagnostic device includes the steps of unfolding the test piece folded at a predetermined angle at a predetermined angle, and information on whether cracks in the test piece occur through an image of the folded area of the test piece spread at the predetermined angle. It may include the step of providing.

The non-contact diagnostic device operation program according to an embodiment of the present invention comprises the steps of bending the test piece by being gripped in the surface direction but pressing the plated test piece in the thickness direction, and folding the bent test piece at a predetermined angle to form a fold area. , Bonding the tape to the folded area, and separating the tape adhered to the folded area, and providing information on whether or not plating is peeled off according to the amount of plating remaining on the tape.

According to an embodiment, the non-contact diagnostic device operation program is gripped in a plane direction, but bending the test piece by pressing the test piece in the thickness direction, folding the bent test piece at a predetermined angle to form a fold area, and the A step of providing information on whether or not cracks have occurred in the test piece may be performed through the image of the folded area.

According to an embodiment of the present invention, a non-contact diagnostic apparatus includes a punching unit for pressing the plated test piece in the thickness direction of the test piece, a jig for holding the test piece in the plane direction, and adjusting the degree of folding of the test piece, and the test piece through the punching unit. It may include a control unit that pressurizes in the thickness direction and controls the pressed test piece to be folded to a predetermined degree through the jig to form a folded area, and an analysis unit that provides information on whether or not plating is peeled off of the folded area.

Through this, the non-contact diagnostic device can provide a standardized analysis method for whether plating has occurred and whether a crack has occurred, and can provide quantified information. Furthermore, the non-contact diagnostic device may provide plating peeling information for which reliability and reproducibility are secured.

1 is a view for explaining a non-contact diagnosis apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a method of providing information on whether or not plating is peeled off according to an embodiment of the present invention.
3 is an example of a detailed flow chart for step S130.
4 is a front view for explaining a process in which the punching unit presses the test piece in step S110.
5 is a front view for explaining the process of folding the test piece by the jig in step S120.
6 is a diagram for explaining steps S132, S134, and S136.
7 is a photograph for explaining a method of analyzing the amount of plating remaining through the image of the tape during step S136.
8 is another example of a detailed flowchart for step S130.
9 is a front view for explaining the process of unfolding the test piece at a predetermined angle in step S140,
10 is a front view for explaining the process of separating the adhesive tape from the test piece in step S142.
11 is a flowchart illustrating a method of providing information on whether a crack occurs according to an embodiment of the present invention.
12 is a front view illustrating a process of photographing a folded area in step S230.
13 is a photograph for explaining a process of analyzing whether a crack occurs in step S230.
14 is a detailed flowchart for step S230.
15 is a diagram for explaining steps S232 and S234 in detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when a component is referred to as being on another component, it means that it may be formed directly on the other component or that a third component may be placed between them.

Further, in various embodiments of the present specification, terms such as first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another component. Therefore, what is referred to as the first component in one embodiment may be referred to as the second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. In addition, in the present specification,'and/or' is used to include at least one of the elements listed before and after.

In the specification, expressions in the singular include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, elements, or a combination of the features described in the specification, and one or more other features, numbers, steps, and configurations It is not to be understood as excluding the possibility of the presence or addition of elements or combinations thereof. In addition, in this specification, "connecting" is used in a sense to include both indirectly connecting a plurality of components, and directly connecting.

In addition, in the following description of the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

According to one feature of the present invention, it is possible to provide a non-contact diagnostic device capable of measuring at least one of whether a test piece has cracked and/or peeled. For example, the non-contact diagnostic device may include a camera capable of photographing one surface of a test piece. The non-contact diagnostic device may analyze an image captured by the camera and provide information on whether or not a crack occurs in the test piece. In addition, the non-contact diagnostic device may further include a tape that is detachable to one side of the test piece. The non-contact diagnostic apparatus may photograph the detached tape, analyze the amount of plating remaining on the tape, and provide information on whether the test piece is plated off. Through this, it is possible to determine the workability and plating properties of the test piece.

According to another aspect of the present invention, the non-contact diagnostic device provides a jig capable of narrowing or increasing the interval between the jigs while holding the test piece in a plane direction, thereby controlling the degree of folding of the test piece. For example, while holding both sides of the test piece, the jig may move in a direction in which the gap between the jig is narrowed and fold the test piece to a predetermined degree. Conversely, the test piece can be spread at a predetermined angle by moving in a direction in which the gap between the jig is widened. That is, the non-contact diagnostic device may control the magnitude of an external force applied to the test piece through the jig.

Through this, the non-contact diagnostic device can provide information on whether cracks and plating are peeled off according to the degree of external force applied to the test piece, and can provide information on whether cracks and peeling off in an extreme environment where the degree of folding and bending is large. Can provide.

According to another feature of the present invention, the non-contact diagnostic device provides a program that automatically controls the non-contact diagnostic device and provides information on whether a crack has occurred or whether plating is peeled off by analyzing an image captured by the camera. I can. The non-contact diagnostic device can be controlled through the program. Through this, the non-contact diagnostic device may automatically measure at least one of whether a crack occurs or whether plating is peeled off of the test piece.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIG. 1.

1 is a view for explaining a non-contact diagnosis apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a non-contact diagnostic apparatus 100 according to an embodiment of the present invention includes a punching unit 110, a punching die 120, a jig 130, a camera 140, a control unit 150, and an analysis unit ( 160) may include any one or more.

The punching part 110 may have a cylindrical shape extending to a predetermined length, and a triangular pyramid or conical protrusion may be provided on the bottom surface of the punching part 110. Hereinafter, a direction of the punching portion is defined as a Z-axis direction, and a direction perpendicular to the Z-axis direction is defined as an X-axis direction and a Y-axis direction, respectively.

The punching unit 110 may press the test piece S in the thickness direction of the test piece S. For example, when the punching unit 110 applies a pressure (P) to the test piece (S) in the -Z-axis direction, the protruding surface of the punching unit 110 is formed with a depression of the punching die 120 to be described later. It can be engaged to deform the test piece (S). In another aspect, the punching part 110 may fall in a vertical direction with respect to the test piece S, and the test piece S may be plastically deformed by the punching part 110.

The punching die 120 may have a plate shape having a predetermined volume. A recessed portion recessed in the thickness direction of the punching die 120 may be provided on one upper surface of the punching die 120, specifically at a position in contact with the protruding portion of the punching portion 110. According to an embodiment, the shape of the depression may have the same shape as the protruding surface of the punching portion 110.

According to an embodiment, a shape in which the test piece is deformed may be determined according to the shape of the protrusion of the punching part 110 and the depression of the punching die 120. For example, when the protrusion and the depression have a conical or triangular column shape, the test piece S may be deformed into a V shape. In addition, when the protrusion and the depression have a cylindrical or spherical shape, the test piece S may be deformed into a cup shape. In the present embodiment, the protrusion and the depression have only been described in the shape of a conical or triangular pillar, but it is obvious to those skilled in the art that the shape can be transformed into a cylindrical or spherical shape.

In this case, the test piece S may be formed of a steel plate having a coil shape, for example, a thickness of 3 mm or less.

The jig 130 may grip the test piece S in a plane direction. In addition, the jig 130 may adjust (M) the interval of the jig while holding the test piece (S). According to an example, the jig 130 may move in a direction M1 to narrow the gap between the jigs and fold the test piece S in a U-shape. According to another example, the jig 130 may move in a direction M2 to widen the gap between the jigs to unfold the test piece S. Through this, a folded area (f) may be provided on one surface of the test piece (S).

The camera 140 may photograph one surface of the test piece S. For example, the camera 140 may photograph the folded area f of the test piece S. Specifically, when the test piece S is folded, the rear surface of the surface facing the test piece S may be photographed. According to an embodiment, a charge-coupled device camera (CCD) may be used as the camera 140.

The control unit 150 is electrically connected to the punching unit 110, the jig 130, and the camera 140, and can perform any one or more of the punching unit 110, the jig 130, and the camera 140. Can be controlled.

For example, the control unit 150 may control the punching unit 110 to descend or rise in the thickness direction of the test piece, that is, in the Z-axis direction. In addition, the control unit 150 may move the jig 130 in a direction in which the gap between the jig 130 is reduced or widened, that is, in the X-axis direction. In addition, the control unit 150 may control the photographing position of the camera 140, and control the camera 140 to transmit the image captured of the test piece S to the analysis unit 160 to be described later. I can.

According to an embodiment, the control unit 150 may move the jig 130 in a direction M1 to narrow the gap between the jig 130 so as to fold the test piece S to a predetermined degree. The jig 130 may be moved in a direction M2 to widen the gap between the jig 130 so that the test piece S is spread at a predetermined angle.

The analysis unit 160 is electrically connected to the camera 140 and the control unit 150 and may analyze an image provided from the camera 140. Specifically, the analysis unit 160 may receive an image of a portion where the test piece S is folded from the camera 140, and analyze the image to determine whether the test piece S is cracked or peeled off plating. Information on whether or not can be provided.

For example, when the jig 130 folds one surface of the test piece S to a predetermined degree to provide a folded area f, the analysis unit 160 It is possible to analyze in real time whether or not a crack is formed through the image of the back of the side facing each other. In other words, the analysis unit 160 may provide information on whether or not cracks are formed and behavior when the test piece S is processed in an extreme environment. Through this, it is possible to analyze the moldability of the test piece.

In the above, the non-contact diagnostic apparatus 100 according to an embodiment of the present invention has been described. Hereinafter, a method of providing information on whether or not plating is peeled off of the non-contact diagnostic device 100 will be described with reference to FIGS. 2 to 11.

2 is a flow chart for explaining a method of providing information on whether or not plating is peeled according to an embodiment of the present invention, and FIG. 3 is an example of a detailed flow chart for step S130, and FIG. 4 is a punching unit in step S110 It is a front view for explaining the process of pressing the test piece, Figure 5 is a front view for explaining the process of folding the test piece by the jig in step S120, Figure 6 is a front view for explaining the step S132, step S134 and step S136, 7 is a photograph for explaining a method of analyzing the amount of plating remaining through the image of the tape in step S136.

Referring to FIG. 2, the method of operating the non-contact diagnostic device 100 is the step of bending the test piece by pressing the plated test piece in the thickness direction while being gripped in the surface direction (S110), so that the bent test piece forms a folded region. It may further include any one or more of the step of folding at a predetermined angle (S120) and the step of providing information on whether or not plating is peeled off the folded region (S130).

Step S110

The step of bending the test piece (S) fixed by the jig 130 by pressing the plated test piece in the thickness direction while being gripped in the plane direction (S110) is a step of bending the test piece (S) fixed by the jig 130 by pressing the punching unit 110 .

Specifically, referring to FIG. 4A, the jig 130 may hold one surface of the test piece S to fix the test piece. In this case, the control unit 150 may control the position of the jig 130 to position the test piece S between the punching unit 110 and the punching die 120. In other words, the punching unit 110, the test piece S, and the punching die 120 may be sequentially positioned on a straight line parallel in the Z-axis direction.

In addition, referring to FIG. 3B, the punching part 110 may bend the test piece in the thickness direction of the test piece S by applying a pressure P in the -Z axis direction.

Step S120

Referring back to FIG. 2, the step of folding the bent test piece at a predetermined angle to form a folded area (S120) is a step of folding the bent test piece in a U-shape by reducing the spacing of the jig 130.

Specifically, referring to FIG. 5A, the control unit 150 may control the jig 130 to move in a direction M1 that narrows the gap between the jigs 130. Through this, the test piece (S) can be folded in a U-shape around the bent position in S110. At this time, the folded position of the test piece (S) may be defined as the folded region (f).

According to an embodiment, the control unit 150 may control the jig 130 to be folded by a predetermined distance by moving the jig 130 by a predetermined distance. For example, the control unit 150 may control the jig 130 so that the folding angle of the test piece S is close to 0 degrees, as shown in FIG. 4(b). In this case, the test piece The folded sides of (S) may touch each other. Accordingly, the test piece (S) can be folded in a "U" shape.

Step S130

Referring back to FIG. 2, in the step of providing information on whether or not plating is peeled off the folded area (S130), the camera 140 photographs the folded area f, and the analysis unit 160 is the folded area. This is a step of analyzing the image of the region (f) and providing information on whether or not plating is peeled off.

Specifically, the controller 150 may control the camera 140 to take a picture of the bending area f of the test piece S. The analysis unit 160 may analyze the image photographed with the camera to determine whether the rear portion of the test piece S is folded. In addition, the analysis unit 160 quantifies the area of the peeled area (F) and compares the area of the peeled area (F) with the area of the observation area to quantitatively measure the degree of peeling of the test piece (S). Can be indicated. In this case, a ratio of the area of the detached area F to the area of the observation area may be defined as an area fraction. The area fraction may be expressed as Equation 1 below.

[Equation 1]

In other words, the analysis unit 160 may measure the degree of peeling of the test piece S and compare the area of the peeled area F with the area of the observation area to derive an area fraction.

According to the embodiment of the present invention described above, the non-contact diagnostic device 100 may plastically deform the test piece S into a V shape through the punching unit 110 and the punching die 120, and the jig Through (130) it is possible to fold the plastically deformed test piece (S). In addition, it may be determined whether or not plating is peeled off the folded region f of the test piece S through the camera 140 and the analysis unit 160. In addition, when it is determined that the plating is peeled on the test piece S, the analysis unit 160 may compare the area of the test piece S with the area of the observation area to provide quantified information.

Unlike the present embodiment, the conventional method of analyzing whether or not plating is peeled off has a disadvantage in that it is difficult to quantify the degree of peeling and the reproducibility is poor because the peeling area is determined by the naked eye of the operator and the subject.

However, through an embodiment of the present invention, the non-contact diagnostic apparatus 100 may provide a standardized analysis method and may provide quantified information. Through this, the non-contact diagnostic device 100 may provide plating peeling information for which reliability and reproducibility are secured.

According to the embodiment with reference to FIG. 3, providing information on whether plating is peeled off the folded area (S130) includes attaching a tape to the folded area (S132), and separating the adhered tape (S134). ), the step (S136) of providing information on whether or not the plating is peeled according to the amount of plating remaining on the separated tape may be further included.

Step S132

Referring to FIG. 6A, the step of adhering the tape to the folded area (S132) is a step of attaching the tape to the folded area (f) of the test piece (S).

Specifically, the tape 170 may be attached (U) to one surface of the test piece (S), and may be attached (U) to a protruding portion of the folded area (f) of the test piece (S). According to an embodiment, a hydraulic cylinder may be used as a method for attaching the tape 170.

Step S134

Referring to (b) of FIG. 6, the step of separating the adhesive tape (S134) is a step of separating (D) from the test piece (S) by detaching the tape 170 attached in the step S132. In this case, if the bonding force of the metal plated on one surface of the test piece S is weaker than the adhesive force of the tape 170, the plated metal may be peeled off and remain on one surface of the separated tape 170.

Step S136

Referring to (c) of FIG. 6, the step of providing information on whether or not the plating is peeled according to the amount of plating remaining on the separated tape (S136) is performed by selecting the adhesive surface of the separated tape (S). In step 140, the analysis unit 160 analyzes the image captured by the camera 140 and provides information on whether the plating is peeled off.

Referring to FIG. 7, the analysis unit 160 may provide information on whether the test piece S is peeled off by analyzing the amount of plating remaining on the tape 170. For example, when plating is peeled off the test piece S, a part of the peeled metal may be detected on the adhesive surface of the tape 170. The peeled metal may induce a difference in reflectance of the adhesive surface of the tape 170. In this case, when the adhesive surface of the tape 170 is photographed, a difference in contrast may occur due to the difference in reflectance. Accordingly, the analysis unit 160 may analyze a difference in contrast between the adhesive surface of the tape 170 and determine that the plating is peeled off the test piece S when the difference in contrast is greater than a predetermined standard.

Conversely, when the plating is not peeled off the test piece S, the tape 170 may have a similar reflectance as a whole. Accordingly, the analysis unit 160 may determine that the plating is not peeled off the test piece S when the difference in contrast between the adhesive surface of the tape 170 is less than a predetermined standard.

According to an embodiment, the analysis unit 160 may derive the area fraction and provide quantitative information on the plating peeling area F. To this end, the analysis unit 160 may derive the area of the plating peeling area F by numerically converting the area of the portion where the difference in contrast occurs. For example, when the area of the plating peeling area F in the observation area having an area of 30 mm x 10 mm is 18.81 mm ² , an area fraction of 6.27% may be obtained by Equation 1 above. Through this, the analysis unit 160 may provide numerical information on the amount of peeling of the plating.

A method of providing information on whether or not plating is peeled according to an embodiment of the present invention has been described above with reference to FIGS. 2 to 7. Hereinafter, another method of providing information on whether or not plating is peeled according to another embodiment of the present invention will be described with reference to FIGS. 8 to 10.

FIG. 8 is another example of a detailed flowchart for step S130, FIG. 9 is a front view for explaining a process of unfolding the test piece at a predetermined angle during step S140, and FIG. 10 is a process of separating the adhesive tape from the test piece during step S142. It is a front view for explanation.

Referring to FIG. 8, in the step S130, the step of adhering the tape to the folded area (S138), the step of spreading the test piece to which the tape is adhered at a predetermined angle (S140), the step of separating the adhesive tape from the spread test piece It may further include at least one of (S142) and the step (S144) of providing information on whether or not the plating is peeled according to the amount of plating remaining on the separated tape.

Step S138

Since the step of adhering the tape to the folded area (S138) corresponds to the step of adhering the tape to the folded area (S132) described above in FIG. 2, a detailed description will be omitted.

Step S140

The step (S140) of spreading the test piece to which the tape is adhered at a predetermined angle is a step of expanding the test piece (S) to which the tape 170 is adhered to have a folding angle of a predetermined angle by increasing the spacing of the jig 130.

Specifically, referring to (a) of FIG. 9, the control unit 150 may control the jig 130 to move in a direction M2 that increases the gap between the jigs 130. Through this, as shown in (b) of FIG. 9, the test piece S may be unfolded in the surface direction of the test piece S while the tape 170 is attached to one side thereof. According to an embodiment, the controller 150 may control the movement of the jig 130 so that the folded portion of the test piece S has a predetermined angle.

Step S142

Referring to FIG. 10, the step of separating (S142) the adhesive tape from the unfolded test piece is a step of separating (D) the tape 170 attached to the folded region (f). At this time, as described in S134, if the bonding force of the plated metal on one side of the test piece S is weaker than the adhesion of the tape 170, the plated metal is peeled off and the separated tape 170 is Can survive.

Step S144

Again, referring to FIG. 8, the step of providing information on whether the plating is peeled according to the amount of plating remaining on the separated tape (S144) corresponds to step S136 described above in FIG. 7, so a detailed description is omitted. I will do it.

A method of providing information on whether or not plating is peeled according to another embodiment has been described above with reference to FIGS. 8 to 10. Hereinafter, a method of providing information on whether a crack has occurred according to an embodiment of the present invention will be described with reference to FIGS. 11 to 15.

FIG. 11 is a flow chart illustrating a method of providing information on whether a crack occurs according to an embodiment of the present invention, FIG. 12 is a front view for explaining a process of photographing a folded area in step S230, and FIG. 13 is A picture for explaining a process of analyzing whether a crack occurs in step S230, FIG. 14 is a detailed flowchart of step S230, and FIG. 15 is a diagram for explaining steps S232 and S234 in detail.

Referring to FIG. 11, the method of providing information on whether or not a crack occurs according to an embodiment of the present invention is a step of bending the test piece by being gripped in the surface direction, but pressing the test piece in the thickness direction (S210), the bent It may include any one or more of folding the test piece at a predetermined angle to form a folded area (S220), and providing information on whether or not cracks of the test piece have occurred through the image of the folded area (S230). .

Among them, the step of bending the test piece by being gripped in the plane direction, pressing the test piece in the thickness direction (S210), and the step of folding the bent test piece at a predetermined angle to form a folding area (S220) are steps S110 and steps, respectively. Since it corresponds to S120, a detailed description will be omitted.

Step S230

Referring to FIG. 12, in the step of providing information on whether or not cracks of the test piece occur through the image of the folded area (S230), the camera 140 photographs the folded area f, and the analysis unit ( 160) is a step of analyzing the image of the folded region f and providing information on whether or not cracks have occurred in the test piece S.

13, (a) of FIG. 13 is a photograph of a crack (C) generated on one surface of the test piece (S), and (b) of FIG. 13 shows the location of the crack (C). It is a picture showing the process of designating the boundary area A as the center, and FIG. 13C is a picture showing the process of removing portions except for the boundary area A. The analysis unit 160 may obtain the shape information of the crack (C) through the process disclosed in (a) to (c) of Fig. 13, and by removing a portion not related to the crack (C) noise Can be reduced.

According to the embodiment with reference to FIG. 14, the step of providing information on whether or not cracks of the test piece has occurred through the image of the folded area (S230) comprises the step of spreading the folded test piece at a predetermined angle (S232) and It may further include any one or more of the steps (S234) of providing information on whether or not cracks of the test piece have occurred through the image of the folded area of the test piece spread at a predetermined angle.

Step S232

The step (S232) of unfolding the test piece folded at a predetermined angle at a predetermined angle is a step of increasing the distance between the jig 130 so that the test piece S is unfolded at a predetermined angle. Specifically, as shown in (a) of FIG. 15, the control unit 150 may control the jig 130 to move in a direction M2 that increases the gap between the jigs 130.

Step S234

In the step (S234) of providing information on whether or not cracks of the test piece occur through the image of the folded area of the test piece spread at a predetermined angle (S234), the camera 140 photographs the folded area (f), and the analysis unit ( Step 160) analyzes the image of the folded area f and provides information on whether or not it is cracked. Specifically, as shown in (b) of FIG. 15, the control unit 150 may control the camera 140 to photograph the folded area f, and the analysis unit 160 is detailed in S230. As described above, information on whether or not there is a crack may be derived by analyzing the captured image.

According to the exemplary embodiment of the present invention described above, the non-contact diagnostic device 100 may form the crack C on one side of the test piece S, for example, in the folded area f of the test piece S. Information on whether or not can be provided. In addition, when it is determined that the crack C is generated in the test piece S, the analysis unit 160 may analyze the length and shape of the generated crack C, and provide the analyzed information.

Unlike the present embodiment, the conventional crack (C) analysis method has a disadvantage in that reproducibility is poor and it is difficult to express quantitatively because it depends on the naked eye and subjectivity of the operator.

However, through an embodiment of the present invention, a standardized crack (C) analysis method may be provided, and quantified information may be provided. Through this, the non-contact diagnosis apparatus 100 may provide a crack (C) analysis result in which reliability and reproducibility are secured.

Furthermore, the non-contact diagnostic device 100 may continuously perform the above-described analysis process. Through this, the non-contact diagnostic device 100 can analyze in real time the bending angle at the time when the crack C is generated in the test piece S, that is, the time at which plastic deformation occurs, and the progress direction of the crack C. I can. Accordingly, the non-contact diagnostic device 100 may provide detailed information on the physical properties and moldability of the test piece S.

According to an embodiment, the non-contact diagnostic device may simultaneously provide information on whether plating is performed and information on whether or not cracks have occurred in one operation method.

For example, the non-contact diagnostic device 100 performs the steps S110 to S136 described above in FIGS. 2 to 3 on one plated test piece S to determine whether the test piece S is peeled off the plating. Information on the crack (C) can be obtained at the same time by obtaining information and obtaining an image of the bending area (f) of the test piece (S).

More specifically, after steps S110 and S120 described with reference to FIG. 2 are performed, step S230 described with reference to FIG. 11 may be performed. Subsequently, steps S130 described with reference to FIG. 2, particularly steps S132 to S136 described with reference to FIG. 3, or steps S138 to S144 described with reference to FIG. 8, may be performed.

It goes without saying that steps S232 and S234, which provide information on whether cracks have occurred in the same manner, may be performed in combination with a step of providing information on whether or not plating is peeled off.

Accordingly, information on whether the test piece S is cracked and whether plating is peeled off may be provided together.

Through this, the user can obtain both information on whether the plating is peeled off and information on whether the crack occurs, and efficiently analyze the plating properties and formability using the one test piece.

In addition, the method of operating the non-contact diagnostic apparatus according to embodiments of the present invention may be provided in the form of a program stored in a recordable medium.

As described above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted by the appended claims. In addition, those skilled in the art will have to understand that many modifications and variations are possible without departing from the scope of the present invention.

100: non-contact diagnostic device
110: punching part
120: punching die
130: jig
140; camera
150: control unit
160: analysis unit
170: tape

Claims (14)

A punching unit for pressing the plated test piece on the steel plate in the thickness direction of the test piece;
A jig that is gripped in the surface direction of the test piece, but controls the degree of folding and unfolding of the test piece;
Pressing in the thickness direction of the test piece through the punching part, and folding the pressed test piece through the jig to a predetermined degree to form a folded area, but the folded surfaces of the test piece are controlled to have a "U" shape facing each other, A control unit controlling the “U” shape of the test piece to be spread at a predetermined angle through the jig; And
Quantitative information on whether or not plating is peeled according to the amount of plating remaining on the tape separated from the folded area after the test piece is adhered to the folded area in a state formed in a "U" shape, and the test piece is spread at a predetermined angle Including the analysis unit provided,
The quantitative information provided by the analysis unit includes an area fraction of an area separated from an observation area in the folded area derived by Equation 1 below.
<Equation 1>
Area fraction[%] = (Area of detached area [mm ² ]/Area of observation area [mm ² ]) X 100
delete delete delete According to claim 1,
The analysis unit further provides information on whether or not a crack has occurred in the test piece through an image of the folded area of the test piece.
A punching unit for pressing the plated test piece on the steel plate in the thickness direction of the test piece;
A jig that is gripped in the surface direction of the test piece, but controls the degree of folding and unfolding of the test piece;
Pressing in the thickness direction of the test piece through the punching part, and folding the pressed test piece through the jig to a predetermined degree to form a folded area, but the folded surfaces of the test piece are controlled to have a "U" shape facing each other, A control unit controlling the “U” shape of the test piece to be spread at a predetermined angle through the jig; And
A non-contact diagnostic apparatus comprising an analysis unit that provides information on whether or not a crack has occurred in the test piece through an image of the folded area spread at a predetermined angle from the "U" shape.
delete Doedoe holding in the surface direction, bending the test piece by pressing the test piece plated on the steel plate in the thickness direction;
A step of folding the bent test piece at a predetermined angle to form a folded region, and have a “U” shape in which the folded surfaces of the test piece face each other;
Adhering a tape to the folded area of the folded test piece to have the "U"shape;
Unfolding the "U"-shaped test piece at a predetermined angle;
Separating the tape adhered to the folded area of the test piece spread at a predetermined angle; And
Including the step of providing quantitative information on whether or not plating peeling of the folded region,
The quantitative information includes an area fraction of an area separated from an observation area in the folded area derived by Equation 1 below.
<Equation 1>
Area fraction[%] = (Area of detached area [mm ² ]/Area of observation area [mm ² ]) X 100
delete delete Doedoe holding in the surface direction, bending the test piece by pressing the test piece plated on the steel plate in the thickness direction;
A step of folding the bent test piece at a predetermined angle to form a folded region, and have a “U” shape in which the folded surfaces of the test piece face each other;
Unfolding the "U"-shaped test piece at a predetermined angle; And
Including the step of providing information on whether or not cracks occur in the test piece through the image of the folded area of the test piece spread at a predetermined angle,
In the step of providing information on whether or not the crack occurs, when a crack occurs in the test piece, obtaining information on the shape of the crack,
The step of obtaining the shape information of the crack,
Photographing the crack generated on the test piece,
Designating a boundary area around the location of the crack, and
And removing a portion other than the boundary area.
delete Doedoe holding in the surface direction, bending the test piece by pressing the test piece plated on the steel plate in the thickness direction;
A step of folding the bent test piece at a predetermined angle to form a folded region, and have a “U” shape in which the folded surfaces of the test piece face each other;
Adhering a tape to the folded area of the folded test piece to have the "U"shape;
Unfolding the "U"-shaped test piece at a predetermined angle;
A non-contact diagnostic device operation program stored in the medium to execute the step of providing information on whether or not plating is peeled off according to the amount of plating remaining on the tape by separating the tape adhered to the folded area of the test piece spread at a predetermined angle .
Doedoe holding in the surface direction, bending the test piece by pressing the test piece plated on the steel plate in the thickness direction;
A step of folding the bent test piece at a predetermined angle to form a folded region, and have a “U” shape in which the folded surfaces of the test piece face each other;
Unfolding the "U"-shaped test piece at a predetermined angle; And
Information on whether or not a crack occurs in the test piece is provided through the image of the folded area of the test piece spread at a predetermined angle, but when a crack occurs in the test piece, the shape information of the crack is obtained, and the location of the crack is centered. A non-contact diagnostic device operating program stored in a medium to execute the step of designating a border area and removing portions other than the border area.

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