CN101655430B - Non-destructive testing experimental device of wood materials - Google Patents
Non-destructive testing experimental device of wood materials Download PDFInfo
- Publication number
- CN101655430B CN101655430B CN2009100729449A CN200910072944A CN101655430B CN 101655430 B CN101655430 B CN 101655430B CN 2009100729449 A CN2009100729449 A CN 2009100729449A CN 200910072944 A CN200910072944 A CN 200910072944A CN 101655430 B CN101655430 B CN 101655430B
- Authority
- CN
- China
- Prior art keywords
- sensor
- test specimen
- hollow bolt
- testing
- transverse rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 title claims abstract description 19
- 239000002023 wood Substances 0.000 title claims abstract description 16
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 46
- 239000006260 foam Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
木质材料无损检测实验装置是一种提供木质材料性能检测的装置，其中涉及木材性能检测设备。将木质材料无损检测装置的基本台面和支撑杆用十字夹连接好，把传感器的导线穿过空心螺栓，然后将传感器的导线依次与放大器和快速傅立叶变换分析仪接通，再通过调节支撑杆和空心螺栓的夹紧程度将被测试件夹紧固定。该装置不破坏被测试件和检测设备，可实现非破坏性检测，具有结构简单、操作方便快捷、检测效率高、简化检测过程、检测质量好和检测成本低的特点。
The non-destructive testing experimental device for wooden materials is a device for testing the performance of wooden materials, which involves wood performance testing equipment. Connect the basic table of the wooden material non-destructive testing device and the support rod with a cross clamp, pass the sensor wire through the hollow bolt, then connect the sensor wire to the amplifier and the fast Fourier transform analyzer in turn, and then adjust the support rod and The clamping degree of the hollow bolt will be clamped and fixed by the test piece. The device does not destroy the tested piece and testing equipment, can realize non-destructive testing, and has the characteristics of simple structure, convenient and fast operation, high testing efficiency, simplified testing process, good testing quality and low testing cost.
Description
Technical field
The invention belongs to a kind of material property checkout equipment, be mainly used in the wood materials Determination of Modulus.
Background technology
In order to use wood materials with holding water, need the performance of wood materials be detected, its elastic modulus is and detects one of index.When detecting, it is a key issue that sensor and wood materials test specimen are fully contacted.At present, the artificial support of the employing that has makes test specimen contact with sensor.Though can reach the purpose of Non-Destructive Testing like this, because test specimen contacts with human body, on the precision that detects, certain error is arranged, and manually help test specimen to make that survey inspection process is loaded down with trivial details.The employing adhesive that also has sticks together sensor and test specimen, but do like this some drawbacks is arranged also: will sensor and test specimen be separated time-consuming, effort after having surveyed a test specimen by instrument; In the process that sensor and test specimen are separated, be easy to sensor and test specimen are damaged, and sensor is the precision measurement parts of price comparison costliness, can cause very big loss; Simultaneously because of usually test specimen can being caused damage in various degree after detecting, and then can not realize the purpose of Non-Destructive Testing, can not realize whole test specimens are detected, can only sampling Detection, experimental data can not be more accurate.
Summary of the invention
Purpose of the present invention is exactly problem and the defective that exists at above-mentioned prior art, be used in combination needs, a kind of non-destructive testing experimental device of wood materials is provided, by being prerequisite to not destroying detected object and detection part, it is detected effectively, reach raising accuracy of detection, detection efficiency, reduce labor intensity, guarantee that detected test specimen and detection part do not damage, simplify testing process and reduce the purpose that detects cost.
The basic design that this invention is created is, with basic table top with clamp part and connect, the lead of sensor passed hollow bolt with cross clamp, by the position of regulating support bar and the clamping degree of regulating hollow bolt test specimen clamped.With lead and the amplifier and the fast Fourier transform (FFT) analysis connection formation loop of sensor, so far constitute wood materials the cannot-harm-detection device again.
The beneficial effect of this invention is, realizes that test specimen is not destroyed fully, can improve the precision of experiment, reduces error, simplifies testing process, is suitable for the test specimen of various different sizes, and this experimental provision is simple in structure, processing ease.Do not destroy detection part, the detection efficiency height detects the quality height, and cost is also low.
Description of drawings
Accompanying drawing is the total synoptic diagram of non-destructive testing experimental device of wood materials and the key diagram of main composition parts thereof.
Fig. 1 is total synoptic diagram of this invention.
Fig. 2 is the front view of the basic table top of this invention.
Fig. 3 is the vertical view of the basic table top of this invention.
Fig. 4 is the synoptic diagram of hollow bolt.
Fig. 5 is the synoptic diagram that clamps part.
Piece number explanation among the figure:
1. base, 2. front rail, 3. rear transverse rod, 4. hollow bolt, 5. nut, 6. test specimen, 7. sensor, 8. sleeve, 9. reinforcing bar, 10. cross clamp, 11. support bars, 12. fast Fourier transform (FFT) analysers, 13. amplifiers, 14. foam pads.
Embodiment
Below in conjunction with accompanying drawing this invention being created optimum implementation is described in detail.Non-destructive testing experimental device of wood materials comprises: fast Fourier transform (FFT) analyser 12, amplifier 13, sensor 7, test specimen 6, support bar 11, foam pad 14, cross clamp 10, basic table top and clamping part.
In Fig. 2 and 3, basic table top is welded by base 1, front rail 2 and rear transverse rod 3.At the bottom of the front rail, the rear transverse rod height.Be mainly used in support and be connected rod member, play the effect of basic framework.
In Fig. 4, hollow bolt 4 is processed into by solid bolt, makes the lead of sensor 7 can pass hollow bolt, and the internal diameter of hollow bolt 4 is less than the external diameter of sensor end.
In Fig. 5, clamp part and be welded by nut 5, sleeve 8 and reinforcing bar 9.
At embodiment shown in Figure 1, be total synoptic diagram of non-destructive testing experimental device of wood materials.This non-destructive testing experimental device of wood materials embodiment is: with cross clamp 10 support bar 11 and basic table top are connected, foam pad 14 is embedded support bar 11 tops make their contacts good.The lead of sensor 7 is passed hollow bolt 4, with cross clamp 10 sensor 7 and the clamping part that connects is clipped on the support bar 11 then.According to the size of the specification of test specimen 6, regulate the position of support bar 11 and hollow bolt 4, test specimen 6 is clamped.The lead of sensor 7 is connected on the amplifier 13, and then the lead of amplifier 13 is connected on the fast Fourier transform (FFT) analyser 13 constitutes the loop.
When detecting wood materials test specimen 6, test specimen to be measured is placed between the left and right sides sensor 7,, then hollow bolt 4 is tightened according to the position of the size adjustment support bar 11 of test specimen specification with normal beam technique.Because the external diameter of sensor 7 end nut greater than the internal diameter of hollow bolt 4, clamps test specimen 6 under the effect that hollow bolt 4 is tightened, at this moment, sensor 7 closely contacts with test specimen 6.The impulsive force that produces when an end of test specimen 6 utilizes the propelling pencil core to fracture is as transmitting, the sensor 7 of test specimen 6 other ends receives signal, transmit and acknowledge(ment) signal passes to fast Fourier transform (FFT) analyser 12 by after amplifying, measure the mistiming of activation signal and acknowledge(ment) signal, utilize conventional formula: V=L/T E=ρ V
2In the formula: V is a longitudinal wave propagation speed, and L is a test specimen length, and T is the travel-time, and E is the dynamic modulus of elasticity, and ρ is the density of test specimen.After experiment finishes, hollow bolt 4 is unscrewed, test specimen is under situation about not being destroyed, and is convenient, fast and measure the physical property of wood materials test specimen accurately, thereby reaches the purpose of detection.
Claims (2)
1. non-destructive testing experimental device of wood materials, mainly comprise support bar (11), fast Fourier transform (FFT) analyser (12), amplifier (13), sensor (7), test specimen (6), foam pad (14), cross clamp (10), basic table top and clamping part, wherein, described basic table top is by steel plate base (1), front rail (2) and rear transverse rod (3) are welded, described front rail (2) and rear transverse rod (3) are welded into and all are welded on the base (1) with reinforcing bar, front rail (2) is low, rear transverse rod (3) height, two support bars (11) are fixedly clamped on front rail (2) by cross clamp (10), in addition two support bars (11) by cross clamp (10) be fixedly clamped rear transverse rod (3) go up and one be positioned at one on the left side and be positioned at the right, two support bars (11) top on front rail (2) has embedded foam pad respectively, these two support bars (11) are contacted well with test specimen (6), left side sensor (7) and right sensor (7) are installed in respectively on each self-corresponding hollow bolt (4), and the lead of left and right sides sensor (7) passes each self-corresponding hollow bolt (4) respectively, be connected with corresponding amplifier (13) separately, connect with the fast Fourier transform (FFT) analyser (12) of this device again, the left sensor (7) that will connect with cross clamp (10) and the left side of its correspondence clamp part and are clipped on the left support bar (11) on the rear transverse rod (3), and the right sensor (7) that will connect with cross clamp (10) and the right side of its correspondence clamp part and are clipped on the right support bar (11) on the described rear transverse rod (3), size according to the specification of described test specimen (6), the position of two support bars (11) about on the adjusting left and right sides each self-corresponding hollow bolt (4) of sensor and the rear transverse rod (3), test specimen (6) is clamped, and between two sensors (7), described left and right sides sensor (7) closely contacted with test specimen (6) about test specimen (6) placed.
2. experimental provision according to claim 1, it is characterized in that: the hollow bolt corresponding with left sensor clamps part with a left side and cooperates, the hollow bolt corresponding with right sensor cooperates with the right part that clamps, and two hollow bolts (4) are all made through solid bolt, are processed into the hollow bolt (4) of satisfying the demand according to the different model of sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100729449A CN101655430B (en) | 2009-09-22 | 2009-09-22 | Non-destructive testing experimental device of wood materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100729449A CN101655430B (en) | 2009-09-22 | 2009-09-22 | Non-destructive testing experimental device of wood materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101655430A CN101655430A (en) | 2010-02-24 |
| CN101655430B true CN101655430B (en) | 2011-08-31 |
Family
ID=41709806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100729449A Expired - Fee Related CN101655430B (en) | 2009-09-22 | 2009-09-22 | Non-destructive testing experimental device of wood materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101655430B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636148B (en) * | 2012-04-16 | 2015-03-04 | 安徽农业大学 | Nondestructive measurement method for tree deformation |
| CN110095351A (en) * | 2019-05-29 | 2019-08-06 | 南京林业大学 | Wood materials elasticity modulus detection device under a kind of humid tropical condition |
| CN111307871B (en) * | 2019-12-30 | 2022-06-07 | 北京农学院 | A test piece fixing device for non-destructive testing of small wooden test pieces for material properties |
-
2009
- 2009-09-22 CN CN2009100729449A patent/CN101655430B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101655430A (en) | 2010-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109959477B (en) | Internal stress ultrasonic longitudinal wave detection method and system for GIS basin-type insulator epoxy test block | |
| CN201152843Y (en) | Woods material elastic modulus non-destructive checkers | |
| CN107703161B (en) | Shock stress wave detection system | |
| CN204495658U (en) | The adjustable amount of deflection of complex condition and modulus tester | |
| CN101655430B (en) | Non-destructive testing experimental device of wood materials | |
| CN106908177A (en) | A kind of device for measuring anisotropic material plane stress | |
| CN102680573B (en) | Timber vibration property tester based on uniform force knocking method | |
| CN219161805U (en) | Dynamic compression-shear composite loading device for separated Hopkinson bar | |
| CN205879875U (en) | "Hami" melon maturity acoustics nondestructive test device | |
| CN209727864U (en) | A kind of timber stress wave nondestructive testing device | |
| CN110455927A (en) | A movable and adjustable ultrasonic probe clamp | |
| CN204255748U (en) | The dynamic checkout unit of timber Poisson ratio | |
| CN204855288U (en) | Bergamot pear compactness nondestructive test device | |
| CN108020269B (en) | Acoustic emission testing device for detecting bending cracks and fractures of shaft parts | |
| CN102590026A (en) | Sawn timber grade evaluation method | |
| CN213984849U (en) | Irregular rock length measuring structure and point load instrument with rock measuring function | |
| CN100338461C (en) | Woods and wooden composite material elastic modulus non-destructive checkers | |
| CN208846029U (en) | A parallel sound intensity sensor fixing and clamping device | |
| CN110208141B (en) | Wood sample detection fixing device for wood micro-drilling resistance cleaning | |
| CN101696957B (en) | Online nondestructive detecting instrument for wood materials | |
| Liu et al. | Measurement of the dynamic modulus of elasticity of wood panels | |
| CN203365097U (en) | Friction tester | |
| CN100338462C (en) | Woods and wooden composite material shearing modulus non destructive checkers | |
| CN2762130Y (en) | Elastic nondestructive detection device for wood and wood composite | |
| CN203432944U (en) | Defect detecting device of woods by stress waves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20120922 |