CN112964549A - Glass impact test fixture and test method - Google Patents
Glass impact test fixture and test method Download PDFInfo
- Publication number
- CN112964549A CN112964549A CN202110265393.9A CN202110265393A CN112964549A CN 112964549 A CN112964549 A CN 112964549A CN 202110265393 A CN202110265393 A CN 202110265393A CN 112964549 A CN112964549 A CN 112964549A
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- frame
- mirror
- glass
- legs
- impact test
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- 239000011521 glass Substances 0.000 title claims abstract description 79
- 238000009863 impact test Methods 0.000 title claims abstract description 36
- 238000010998 test method Methods 0.000 title abstract description 5
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 15
- 230000006378 damage Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000012634 fragment Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000005328 architectural glass Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a glass impact test fixture and a test method, wherein the fixture comprises a bottom plate, a support frame, a top boundary support, support legs, glasses legs, a mirror and a mirror frame, the upper end and the lower end of the support frame are respectively and fixedly connected with the bottom plate and the support frame, the mirror frame is arranged in a space defined by the bottom plate, the support frame and the top boundary support, reinforcing ribs are respectively arranged on two sides of the support frame, the mirror frame is rotatably connected with the glasses legs, the bottoms of the glasses legs are fixedly connected with the support legs, the support legs are fixedly connected with the bottom plate, and the mirror is embedded in the mirror frame. The invention can reflect the crack in the test process into the high-speed camera, thereby clearly recording the crack propagation change rule and analyzing and processing the splashing speed of the glass fragments.
Description
Technical Field
The invention relates to the technical field of experimental research equipment for material dynamic performance, in particular to a glass impact test clamp and a test method.
Background
Glass is widely used in building doors and windows and glass curtain walls as a common building material. Glass is typically a brittle material that often cracks under load, forming a large number of fragments. During the use of the architectural glass, the architectural glass is damaged under various impact actions, and certain extreme impact loads, such as wind-borne fragment impact generated by hurricanes, explosion shock waves and the like, pose great threats to the architectural glass. The generation and the flying of the glass fragments are the destruction characteristics of the glass under the blast impact load, so that the safety threat to personnel is great, the generation and the flying of the glass fragments are recognized, the crack propagation and the destruction mode of the glass under the impact load are deeply known, the shape and the splashing speed of the glass fragments are analyzed, and the corresponding protection technology is provided, so that the important significance is realized on the safety of the personnel.
Fragments of architectural glass under impact load are formed by the intersection of cracks and, in testing, few researchers have studied the propagation and failure modes of architectural glass cracks under impacts of different velocities due to the difficulties of the testing technique. Particularly, due to the lack of corresponding test fixtures and test means, the initiation and the expansion of the glass crack under the impact load cannot be successfully shot, and the difficulty is brought to the research of the crack development rule. Furthermore, no study has been made on the comparison of the fracture behavior of glass sheets under different boundary conditions.
Therefore, the prior art needs a technical scheme that the impact test of the architectural glass under different boundary conditions can be smoothly realized, the mirror is used for reflecting the crack of the glass to enter the high-speed camera, and the detailed damage process of the glass test piece is observed.
Disclosure of Invention
Aiming at the problems, the invention provides a glass impact test clamp and a test method.
The technical scheme of the invention is as follows:
the utility model provides a glass impact test anchor clamps, includes bottom plate, braced frame, top boundary support, supporting legs, mirror leg, mirror and mirror holder, braced frame's upper and lower both ends respectively with the bottom plate with braced frame fixed connection, the mirror holder sets up the bottom plate braced frame with in the space that top boundary support encloses, braced frame's both sides set up the reinforcement muscle respectively, the mirror holder with the mirror leg rotates to be connected, the bottom of mirror leg with supporting legs fixed connection, the supporting legs with bottom plate fixed connection, the mirror is embedded in the mirror holder.
The glasses frame comprises a small supporting plate at the bottom of the glasses frame surface and a glasses frame side plate, the small supporting plate at the bottom of the glasses frame surface is fixedly connected with the glasses frame side plate, and the glasses frame side plate is rotatably connected with the glasses legs.
The side panel of the spectacle frame is rotationally connected with the spectacle legs through bolts.
The small supporting plate at the bottom of the mirror frame surface is fixedly connected with the side panel of the mirror frame in a welding mode.
The bottom plate, top border support, mirror holder face bottom small support plate, the supporting legs, the mirror leg with mirror holder side board all adopts the steel sheet to make, braced frame adopts four square steel pipes to make, the reinforcement muscle is for
And (5) reinforcing steel bars.
The reinforcing ribs are fixedly connected with the square steel pipes in a welding mode.
The upper end and the lower end of the supporting frame are fixedly connected with the bottom plate and the supporting frame respectively in a welding mode, and the bottoms of the glasses legs are fixedly connected with the supporting legs in a welding mode.
A glass impact test method comprising the steps of:
s1, assembling the glass impact test clamp as claimed in claim 1, and fixing the glass impact test clamp in a test bed;
s2, adjusting the angle of the mirror frame to enable the mirror to completely reflect the glass test piece to the high-speed camera;
s3, adjusting parameters of the high-speed camera and the loading equipment;
s4, carrying out dynamic impact tests at different rates;
and S5, recording test data and images of the glass test piece impact damage captured by the high-speed camera, and performing post-analysis processing.
The mirror holder comprises a mirror holder face bottom small supporting plate and a mirror holder side plate, the mirror holder face bottom small supporting plate is fixedly connected with the mirror holder side plate, the mirror holder side plate is rotatably connected with the mirror legs through bolts, and in the step S2, the angle of the mirror holder is adjusted by loosening the bolts.
Step S1 further includes: and welding two steel sealing strips at the bottom end of the side panel of the mirror frame, placing the mirror, and then welding two steel sealing strips at the upper end of the side panel of the mirror frame to seal the mirror, thereby fixing the mirror in the mirror frame.
Compared with the prior art, the invention has the beneficial effects that: the mirror with the adjustable angle can reflect cracks in the test process to enter the high-speed camera, so that crack expansion change rules are clearly recorded, meanwhile, the splashing speed of the glass fragments can be analyzed and processed, the crack expansion rules are facilitated to research glass breaking mechanisms, a dynamic constitutive model of the glass is established and perfected, and follow-up fragment feature research and numerical simulation verification are facilitated. In addition, the test fixture can realize the boundary four-point support or four-frame support of the glass test piece, and has important significance for researching the influence of boundary conditions on glass damage and correcting numerical simulation.
Drawings
FIG. 1 is a schematic view of the overall structure of a glass impact test jig;
FIG. 2 is a front view of a glass impact test fixture.
FIG. 3 is a side view of a glass impact test fixture.
FIG. 4 is a top view of a glass impact test fixture.
FIG. 5 is a schematic view showing a state where a glass impact test is performed.
Reference numerals: the mirror comprises a base plate 1, a top boundary support 2, a support frame 3, a mirror frame 4, a mirror frame surface bottom small supporting plate 5, supporting legs 6, mirror legs 7, mirror frame side plates 8, reinforcing ribs 9 and mirrors 10.
Detailed Description
The present invention will be described with reference to specific examples.
The glass impact test fixture shown in fig. 1-4 comprises a bottom plate 1, a supporting frame 3, a top boundary support 2, supporting legs 6, glasses legs 7, a mirror 10 and a mirror frame 4, wherein the upper end and the lower end of the supporting frame 3 are fixedly connected with the bottom plate 1 and the supporting frame 3 respectively, the mirror frame 4 is arranged in a space defined by the bottom plate 1, the supporting frame 3 and the top boundary support 2, reinforcing ribs 9 are arranged on two sides of the supporting frame 3 respectively, the mirror frame 4 is rotatably connected with the glasses legs 7, the bottoms of the glasses legs 7 are fixedly connected with the supporting legs 6, the supporting legs 6 are fixedly connected with the bottom plate 1 through M20 bolts, and the mirror 10 is embedded in the mirror frame 4.
In this embodiment, the bottom plate 1, the top boundary support 2, the small support plate 5 at the bottom of the mirror bracket surface, the support legs 6, the mirror legs 7 and the mirror bracket side panels 8 are all made of steel plates, the support frame 3 is made of four square steel tubes, and the reinforcing ribs 9 are
The reinforcing steel bar and the reinforcing steel bar 9 are fixedly connected with the square steel tube in a welding mode.
The glass impact test method specifically comprises the following steps:
s1, assembling the glass impact test fixture as claimed in claim 1, welding two steel seals at the bottom end of the side panel 8 of the mirror frame, placing the mirror 10 in the glass impact test fixture, welding two steel seals at the upper end of the side panel 8 of the mirror frame, sealing the mirror 10, fixing the mirror 10 in the mirror frame 4, and fixing the glass impact test fixture in a test bed. In the embodiment, the boundary support steel plate 2 and the clamping plate on the test bed are locked by bolts to clamp the glass test piece for the impact test, so that a four-frame boundary condition is formed, and the geometric dimensions of the clamping plate on the frame support and the top boundary support 2 are consistent; in other embodiments of the present invention, four glass single claws may be used to support the glass test piece, forming a four-point support boundary condition.
S2, adjusting the angle of the mirror frame 4 by loosening the bolts to adjust the angle of the mirror frame 4, so that the mirror 10 can completely reflect the glass test piece to the high-speed camera. The mirror holder 4 comprises a mirror holder face bottom small supporting plate 5 and a mirror holder side plate 8, the mirror holder face bottom small supporting plate 5 is fixedly connected with the mirror holder side plate 8, and the mirror holder side plate 8 is rotatably connected with mirror legs 7 through bolts.
And S3, adjusting parameters of the high-speed camera shooting and loading equipment.
S4, carrying out dynamic impact tests at different speeds, and enabling the impact head to impact and damage the glass test piece at different speeds as shown in figure 5.
And S5, recording test data and images of the glass test piece impact damage captured by the high-speed camera, and performing post-analysis processing.
The above description is only for the preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes and modifications without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (10)
1. A glass impact test fixture is characterized by comprising a bottom plate (1), a supporting frame (3), a top boundary support (2), supporting legs (6), glasses legs (7), a mirror (10) and a glasses frame (4), the upper end and the lower end of the supporting frame (3) are respectively fixedly connected with the bottom plate (1) and the supporting frame (3), the spectacle frame (4) is arranged in a space enclosed by the bottom plate (1), the supporting frame (3) and the top boundary support (2), reinforcing ribs (9) are respectively arranged on two sides of the supporting frame (3), the spectacle frame (4) is rotationally connected with the spectacle legs (7), the bottom of mirror leg (7) with supporting legs (6) fixed connection, supporting legs (6) with bottom plate (1) fixed connection, mirror (10) are embedded in mirror holder (4).
2. The glass impact test fixture according to claim 1, wherein the frame (4) comprises a frame surface bottom small supporting plate (5) and a frame side plate (8), the frame surface bottom small supporting plate (5) is fixedly connected with the frame side plate (8), and the frame side plate (8) is rotatably connected with the glasses legs (7).
3. The glass impact test fixture according to claim 2, wherein said side frame panels (8) are bolted for rotational connection to said temple bars (7).
4. The glass impact test fixture according to claim 2, wherein the small support plate (5) at the bottom of the frame surface is fixedly connected with the side plate (8) of the frame by welding.
5. The glass impact test fixture according to claim 2, wherein the bottom plate (1), the top boundary support (2), the small support plate (5) at the bottom of the mirror frame surface, the supporting legs (6), the mirror legs (7) and the side mirror frame plates (8) are all made of steel plates, the supporting frame (3) is made of four square steel tubes, and the reinforcing ribs (9) are made of four square steel tubes
And (5) reinforcing steel bars.
6. The glass impact test fixture according to claim 5, wherein the reinforcing rib (9) is fixedly connected with the square steel tube by welding.
7. The glass impact test fixture according to claim 1, wherein the upper end and the lower end of the support frame (3) are fixedly connected with the bottom plate (1) and the support frame (3) in a welding manner, and the bottoms of the glasses legs (7) are fixedly connected with the support legs (6) in a welding manner.
8. A glass impact test method is characterized by comprising the following steps:
s1, assembling the glass impact test clamp as claimed in claim 1, and fixing the glass impact test clamp in a test bed;
s2, adjusting the angle of the mirror frame (4) to enable the mirror (10) to completely reflect the glass test piece to the high-speed camera;
s3, adjusting parameters of the high-speed camera and the loading equipment;
s4, carrying out dynamic impact tests at different rates;
and S5, recording test data and images of the glass test piece impact damage captured by the high-speed camera, and performing post-analysis processing.
9. The glass impact test method according to claim 8, wherein the frame (4) comprises a frame surface bottom small supporting plate (5) and a frame side plate (8), the frame surface bottom small supporting plate (5) is fixedly connected with the frame side plate (8), the frame side plate (8) is rotatably connected with the glasses legs (7) through bolts, and in the step S2, the angle of the frame (4) is adjusted by loosening the bolts.
10. The glass impact test method according to claim 9, wherein the step S1 further comprises: two steel seals are welded at the bottom end of the side panel (8) of the mirror frame, a mirror (10) is placed in the side panel, and then two steel seals are welded at the upper end of the side panel (8) of the mirror frame to seal the mirror (10), so that the mirror (10) is fixed in the mirror frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265393.9A CN112964549A (en) | 2021-03-11 | 2021-03-11 | Glass impact test fixture and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265393.9A CN112964549A (en) | 2021-03-11 | 2021-03-11 | Glass impact test fixture and test method |
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| Publication Number | Publication Date |
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| CN112964549A true CN112964549A (en) | 2021-06-15 |
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| CN202110265393.9A Pending CN112964549A (en) | 2021-03-11 | 2021-03-11 | Glass impact test fixture and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554164A (en) * | 2023-11-27 | 2024-02-13 | 西南交通大学 | Laminated glass impact test device and method with multiple boundary conditions |
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| US6766046B1 (en) * | 1998-02-19 | 2004-07-20 | Asahi Glass Company Ltd. | Plate glass shatter testing method, device, imaging method for glass testing and image signal processing method |
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| CN212159324U (en) * | 2020-04-21 | 2020-12-15 | 扬州恒泰玻璃有限公司 | Cesium potassium glass finished product experimental apparatus that shocks resistance |
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2021
- 2021-03-11 CN CN202110265393.9A patent/CN112964549A/en active Pending
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| US6766046B1 (en) * | 1998-02-19 | 2004-07-20 | Asahi Glass Company Ltd. | Plate glass shatter testing method, device, imaging method for glass testing and image signal processing method |
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| CN212159324U (en) * | 2020-04-21 | 2020-12-15 | 扬州恒泰玻璃有限公司 | Cesium potassium glass finished product experimental apparatus that shocks resistance |
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| Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554164A (en) * | 2023-11-27 | 2024-02-13 | 西南交通大学 | Laminated glass impact test device and method with multiple boundary conditions |
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Application publication date: 20210615 |
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