CN1815168A - Dynamic fracture-mechanics testing system - Google Patents
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Abstract
Present invention discloses a dynamical fracture mechanics testing system referring to material mechanics analyse testing field. Said dynamical fracture mechanics testing system includes dynamical loading mechanism, dynamical fracture image collection unit, dynamic signal collection unit, temperature control unit, automatically verification unit and data processing unit etc. Said invention utilizes dynamical fracture mechanics testing system to make dynamical loading to dynamical fracture mechanics test sample with accuracy complete result, providing reference to metal and other material fracture behaviour, the rule of material anti-breaking ability variation depending to temperature, and dynamical fracture toughness analysis.
Description
Technical field
The invention belongs to material mechanical performance test analysis field, relate generally to the test analysis of the dynamic mechanical of inorganic material such as metal, plastics, especially relate to a kind of dynamic fracture-mechanics testing system.
Background technology
The safety assessment of hardware service condition is evaluated as the master with its anti-break capability.Be subjected to condition restriction, what carry out at present is the safety assessment of static fracture mechanics more.How failure accidents a large amount of in the reality take place under dynamic loading, as the fracture of luxurious large ship Titanic, and space shuttle challenger space disintegration etc.Therefore the safety assessment of the dynamic fracture-mechanics of material is only more science and reliable.
Traditional dynamic testing machine is an impact testing machine, can only write down the impact absorbing energy after sample once interrupts, and can't write down the fracture process of sample under the dynamic loading condition, more can't obtain the Dynamic Fracture Toughness of material.For the research needs that satisfy new material, the needs that satisfy engineering design and safety assessment, the state-of-the-art dynamic testing machine of research and development production at present is a Zwic/Roell Amsler shock machine series in the world.This product not only can write down the impact absorbing energy that interrupts sample, and record thrusts the power-displacement curve of sample in the process simultaneously.This curve can be used for the fracture process of analytical sample under dynamic load effect.
But also be nowhere near as a complete dynamic fracture-mechanics testing machine.Also need have following function:
1. the fracture behaviour of test material under various loading velocities;
2. the temperature variant rule of the anti-break capability of test material;
3. the temperature variant rule of test sample fracture apperance feature;
4. measure material under given conditions, as the Dynamic Fracture Toughness and the Changing Pattern thereof of certain loading velocity, service temperature;
5. possesses the automatic verification system that meets international standard.
Summary of the invention
The object of the present invention is to provide a kind of brand-new dynamic fracture-mechanics testing machine.This test function is finished automatically to the dynamic load work of test sample under particular load speed and specific test temperature, and the record sample is the eigenwerts such as power-displacement curve, power, energy of impact absorbing energy, crackle crack initiation energy, crack propagation energy, the fracture process of (loading velocity, test temperature) under given conditions; Fiber section rate, crack length, side swell value, fracture apperance; Dynamic Fracture Toughness and with the Changing Pattern of temperature or speed, and can realize finishing automatically the testing machine calibrating, control test temperature is automatically chosen loading velocity arbitrarily, is finished a complete set of dynamic fracture-mechanics test and data analysis function automatically.
Based on above-mentioned purpose, the present invention adopts following technical solution to finish.
Dynamic fracture-mechanics testing system of the present invention comprises dynamic load mechanism, dynamic fracture image acquisition units, dynamic signal acquisition unit, temperature control unit, automatic Verification unit and data processing unit; Wherein, dynamic load mechanism is connected with dynamic fracture image acquisition units and dynamic signal acquisition unit, also links to each other with the automatic Verification unit with temperature control unit simultaneously; Dynamically fracture image acquisition units, dynamic signal acquisition unit and temperature control unit link to each other with data processing unit simultaneously, draw experimental result and analysis result thereby enter data processing unit simultaneously and carry out data processing by data processing unit from the data of dynamic fracture image acquisition units and dynamic signal acquisition unit and temperature control unit collection.
Dynamic load mechanism is equipped with main shaft on the top of mainframe, and it is provided with automatic hanging and swinging mechanism, is equipped with pendulum on main shaft, and the rear portion is furnished with drive motor, and the below of mainframe is provided with jaw and is used for supporting sample;
Automatically hanging and swinging mechanism is provided with to hang to put to link up with and is used for tangling pendulum, and hanging and swinging mechanism changes the angle of hanging pendulum under the effect of drive motor automatically.
Dynamically the image analysis processing unit of fracture image acquisition units carries out analyzing and processing and will analyze data sending into data processing unit to the data of image acquisition units and sample that microscope is gathered.
The dynamic signal acquisition unit imports data such as dynamic load into data collecting card by synchronizer trigger and by rotary encoder and dynamic load sensor, sends into data processing unit then.
Temperature control unit is by the temperature of ECU (Electrical Control Unit) control high-low temperature chamber, and the process data transmission unit is transferred to data processing unit with the temperature data of sample again.
The automatic Verification unit carries out automatic Verification by several calibrating unit to dynamic fracture-mechanics testing system; Wherein, by the hunting period of calibrating unit measurement pendulum, realize that by the calibrating unit pointwise of energy is demarcated, by the energy loss of calibrating unit detection load maintainer.
Data processing unit includes several data input signals and several data processing units, and several data input signals enter several data processing units of its correspondence and finish the mechanics property analysis of sample under dynamic load; Wherein, data processing unit will come from the signal 1a input ballistic work processing unit of data collecting card; The signal 2a input scale transformation unit that will come from data collecting card; The signal 3a input data storage cell that will come from data collecting card; The signal 4a input data fitting unit that will come from data collecting card; With signal 4a and signal 5a while input curve integral unit; With signal 4a, 5a, 6a and signal 7a input curve drawing unit; Dynamic fracture-mechanics analytical calculation unit calculates the dynamic fracture-mechanics data of material by the processing of above each data processing unit.
The present invention implements dynamic load to the dynamic fracture-mechanics sample, by signals such as the dynamic force of dynamic signal acquisition unit collected specimens, times, finishes data processing by data processing unit; Utilize the have no progeny pattern signal of sample of dynamic image acquisition unit collection, finish data processing and last dynamic fracture-mechanics performance evaluation by data processing unit, its result is accurately complete.
Description of drawings
The present invention is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing 1 is the structure connection diagram of dynamic fracture-mechanics testing system.
Accompanying drawing 2 is the structural representation of dynamic load of the present invention mechanism.
Accompanying drawing 3 is the structural representation of automatic hanging and swinging mechanism of the present invention.
Accompanying drawing 4 is the structure connection diagram of dynamic fracture image acquisition units of the present invention.
Accompanying drawing 5 is the structure connection diagram of dynamic signal acquisition of the present invention unit.
Accompanying drawing 6 is the structure connection diagram of temperature control unit of the present invention.
Accompanying drawing 7 is the structure connection diagram of automatic Verification of the present invention unit.
Accompanying drawing 8 is the structure connection diagram of data processing unit of the present invention.
Accompanying drawing 9 impacts classical power-displacement curve for test of the present invention.
Accompanying drawing 10 is the different temperatures impulse test power-displacement curve of the present invention's test.
Embodiment
With reference to the structure connection diagram of Fig. 1, present invention includes dynamic load mechanism 1, dynamic fracture image acquisition units 2, dynamic signal acquisition unit 3, temperature control unit 4, automatic Verification unit 5 and data processing unit 6.Dynamic fracture-mechanics testing system based on dynamic load mechanism 1 is connected with dynamic fracture image acquisition units 2 and dynamic signal acquisition unit 3, and these two data that the unit collected enter data processing unit 6 simultaneously.Also be connected with temperature control unit 4 and automatic Verification unit 5 in dynamic load mechanism 1 simultaneously, temperature control unit 4 can carry out temperature control to test sample, and is incubated, and the temperature with sample is transferred to data processing unit 6 simultaneously.The technical indicator of the 5 pairs of dynamic load mechanisms in automatic Verification unit is carried out automatic Verification.Carry out the data processing of various signals by data processing unit 6, finish the experiment and the analysis of sample.
With reference to Fig. 2 and Fig. 3, dynamic load mechanism is provided with automatic hanging and swinging mechanism 1.2 above mainframe 1.1, be equipped with pendulum 1.4 on the main shaft 1.3, is provided with jaw 1.6 and is used for supporting sample 1.7 below mainframe 1.1; Automatically hanging and swinging mechanism 1.2 is provided with and hangs pendulum hook 1.8, is used for tangling pendulum 1.4, and hanging and swinging mechanism 1.2 is connected with drive motor 1.5, and changes the angle [alpha] of hanging pendulum under the effect of motor 1.5, reaches the purpose that changes impact velocity.When work, drive motor 1.5 lifts pendulum 1.4, is fixed on the position that hangs 1.8 lockings of pendulum hook, sample 1.7 is placed on the jaw 1.6, discharge pendulum 1.4, pendulum thrusts test sample 1.7 with the speed of setting, thereby finishes the dynamic load to test sample 1.7.The speed of pendulum 1.4 is calculated with following formula:
The g-free-fall acceleration; The centre of percussion length of l-pendulum; The pre-elevation angle of α-hanging and swinging mechanism.Motor 1.5 drives hanging and swinging mechanism 1.2, changes its pre-angle of elevation alpha, thereby changes the initial velocity of pendulum 1.4.
With reference to Fig. 4, dynamically fracture image acquisition units 2 includes image acquisition units 2.1, sample 1.7, microscope 2.2 and image analysis processing unit 2.3; Ccd image collecting unit 2.1 and Stereo microscope 2.2 are finished the pattern collection to test sample jointly, the cross-section fiber rate of the 2.3 pairs of test sample fractures in image analysis processing unit, side swell value and crack length carry out analyzing and processing, draw the desired result of user at last.
With reference to Fig. 5, said dynamic signal acquisition unit 3 comprises rotary encoder 3.1, dynamic load sensor 3.2, synchronizer trigger 3.3 and data collecting card 3.4; Synchronous working by synchronizer trigger 3.3, simultaneously data are imported into data collecting card 3.4 by rotary encoder 3.1 and dynamic load sensor 3.2, then the data of gathering are sent into data processing unit 6, finish the power-displacement and the energy record of impact sample fracture process.
With reference to Fig. 6, said temperature control unit 4 comprises ECU (Electrical Control Unit) 4.1, high-low temperature chamber 4.2, data transmission unit 4.3.ECU (Electrical Control Unit) 4.1 is used for controlling the temperature of height temperature control box 4.2, it can be adjusted in-100 ℃～+ 1000 ℃ temperature ranges, when being set in uniform temperature, can under this temperature, be incubated, its technical indicator satisfies the relevant world, request of national standard, also can heat up, cooling, thermostatic control.Temperature data when through data transmission unit 4.3 test sample being tested again is transferred to data processing unit 6, participates in relevant data processing.
With reference to Fig. 7, said automatic Verification unit 5 is by automatic control unit 5.1, according to the ballistic constant to dynamic load mechanism, in several evaluation unit, carry out automatic Verification as important technology indexs such as the pre-elevation angle, air resistance friction force, hunting period, the centres of percussion, and examine and determine every technical indicator of dynamic fracture-mechanics testing system according to the requirement of ISO 148, ASTM E23, GB/T 3808-2002 etc.Automatic Verification unit 5 is by calibrating unit 5.1, based on the single pendulum structure, according to formula: l
1=gt
2/ 4 π
2Measure the hunting period of pendulum 1.4; By the regulation of calibrating unit 5.2 according to ASTM E23, ISO 148, the angle and the formula that utilize pendulum to kick up: A
V=M (cos β-cos α) realizes the pointwise demarcation of energy; By calibrating unit 5.3,, detect the technical indicators such as energy loss of load maintainer 1 according to the regulation of ASTM E23, ISO 148 and the 9.4.1 fund of GB/T 3808-2002.
With reference to Fig. 8, said data processing unit 6 includes several data input signals and several data processing computing units, and its several data input signals enter several data processing units of its correspondence and finish the mechanics property analysis of sample under dynamic load.These several data processing computing units are: impact absorbing energy computing unit 6.1, scale transformation computing unit 6.2, data storage computing unit 6.3, data fitting computing unit 6.4, curvilinear integral computing unit 6.5, curve plotting computing unit 6.6, dynamic fracture-mechanics analytical calculation unit 6.7, data processing computing units such as output device computing unit 6.8 are finished under specified temp by these data processing computing units, particular load speed is exerted oneself-the displacement curve drafting, eigenwert is determined, energy decomposes, the cross-section fiber rate, the side swell value, Dynamic Fracture Toughness determines to reach calculating and the analysis of various eigenwerts with the Changing Pattern of temperature or loading velocity.
Embodiment
At first as requested system is provided with loading velocity, change the extension pendulum angle [alpha] of automatic hanging and swinging mechanism 1.2 by the motor in the automatic hanging and swinging mechanism 1.2 1.5, the needed temperature of test is set for height temperature control box 4.2 according to the automatically controlled part 4.1 of designing requirement on temperature control unit 4, implement lifting temperature and insulation, and transmit in test the temperature data of samples 1.7 by data transmission unit 4.3.Secondly by dynamic load mechanism 1 pendulum 1.4 is inserted automatic hanging and swinging mechanism 1.2, make pendulum 1.4 have certain potential energy, then sample 1.7 is placed on the jaw 1.6 of dynamic load mechanism 1, discharge pendulum 1.4, pendulum is with certain initial velocity impact specimen 1.7, the collection of synchronizer trigger 3.3 control signals of dynamic signal acquisition unit 3 simultaneously, rotary encoder 3.1 detects the potential energy difference and the pendulum moment linear velocity of hitting the sample front and back, dynamic load sensor 3.2, the high speed loading force that is subjected on 3.4 pairs of samples 1.7 of data collecting card carries out high-speed sampling, suffered force signal in the whole fracture process of record sample, energy signal, time signal, displacement signal etc.The fracture apperance of sample is gathered by the ccd image collecting unit 2.1 and the Stereo microscope 2.2 of dynamic fracture image acquisition units 2, and cross-section fiber rate, side swell value and the crack length of its fracture determined in image analysis processing unit 2.3.Data processing unit 6 receives data that each unit collects and by impact absorbing energy computing unit 6.1, scale transformation computing unit 6.2, data storage computing unit 6.3, data fitting computing unit 6.4, curvilinear integral computing unit 6.5, curve plotting computing unit 6.6, dynamic fracture-mechanics analytical calculation unit 6.7, data processing computing units such as output device computing unit 6.8 are finished under specified temp, particular load speed is exerted oneself-the displacement curve drafting, eigenwert is determined, energy decomposes, the cross-section fiber rate, the side swell value, Dynamic Fracture Toughness determines to reach calculating and the analysis of various eigenwerts with the Changing Pattern of temperature or loading velocity.
It below is the dynamic fracture-mechanics test findings that the present invention carries out with certain deck of boat steel.
Testing equipment is a dynamic fracture-mechanics testing machine of the present invention.
Specimen size is 10 * 10 * 55mm
3Standard three-point bending sample, by GB processing, dynamic fracture-mechanics style crackle is 0.45 than a/W with the V-type Charpy bar.
A. setting dynamic fracture-mechanics testing machine loading initial velocity as requested is 5.3m/s, the pre-elevation angle of the motor-driven hanging and swinging mechanism that speed sets up an organization, and making it stop at pre-angle of elevation alpha is 135 degree places, then:
V
0＝[2gl(1-cos135°)]
0.5＝5.33m/s。
B. the automatic Verification part is 134.72 ° according to the pre-elevation angle that GB GB/T 3803-2002 measures this testing machine; Air resistance and friction force are 2.1J (full scale 0.42%); Return homodyne 0.3J.The centre of percussion is 849.6mm.More than work and finish jointly by the corresponding calibrating of the automatic control system associating unit in the automatic Verification part.The result satisfies the requirement of GB.
C. by temperature control system high-low temperature chamber is cooled to the needed temperature of test design, again the dynamic fracture-mechanics sample is put into high-low temperature chamber, according to the relevant criterion requirement, the insulation regular hour.Sample is put on the jaw of dynamic load mechanism by mechanical arm, the temperature signal with sample passes to data handling system simultaneously again.
D. start dynamic load mechanism, hanging and swinging mechanism discharges pendulum automatically, and pendulum thrusts the dynamic fracture-mechanics sample with the initial velocity of 5.3m/s.
E. dynamic signal acquisition: when pendulum impacted disconnected dynamic fracture-mechanics sample, the rotary encoder of dynamic signal acquisition unit, displacement transducer, dynamic load sensor, data collecting card were subjected to synchronizer trigger instruction each coherent signal of high speed acquisition and send to data handling system.
F. dynamically the fracture image acquisition units is adopted unit and Stereo microscope by means of image and is finished pattern collection to the sample of having no progeny jointly, and the image analysis processing unit is handled the pattern of test specimen according to relevant standard.
G. all useful signal of collecting of data processing unit through classification relatively and is finished analysis, data processing, gathers and is reached a conclusion or the result by each corresponding data processing unit.
Test findings and analysis:
1) the v shape summer is than instrumentation impulse test
A. Fig. 9 impacts classical power-displacement curve for the v shape summer than instrumentation
B. Figure 10 is that test temperature is by-40～-84 ℃ than instrumentation impulse test power-displacement curve variation tendency the v shape summer under different temperatures, and curve is changed to full fragility by full toughness.
2) dynamic fracture-mechanics test:
A. pre-crackle Dynamic Fracture Toughness test power-displacement curve changes under the different temperatures, and test temperature is by-40～-84 ℃, and curve is changed to full fragility by full toughness.
Table 1 is the test findings of test fracture crackle:
Table 1
| Specimen coding | Test temperature (℃) | Specimen size (mm) | Crack length (mm) | a/w | |||||
| Long (L) | Wide (W) | High (B) | a 1 | a 2 | a 3 | (a 1+a 2+a 3)/3 | |||
| 0--1 | 26 | 55 | 10 | 10 | 4.54 | 4.53 | 4.45 | 4.51 | 0.451 |
| 0--2 | 26 | 55 | 10 | 10 | 4.34 | 4.37 | 4.27 | 4.33 | 0.433 |
| 2--1 | -20 | 55 | 10 | 10 | 4.59 | 4.6 | 4.54 | 4.58 | 0.458 |
| 2--2 | -20 | 55 | 10 | 10 | 4.55 | 4.47 | 4.4 | 4.47 | 0.447 |
| 2--3 | -20 | 55 | 10 | 10 | 4.26 | 4.37 | 4.32 | 4.32 | 0.432 |
| 4--1 | -40 | 55 | 10 | 10 | 4.5 | 4.6 | 4.58 | 4.56 | 0.456 |
| 4--2 | -40 | 55 | 10 | 10 | 4.31 | 4.39 | 4.4 | 4.37 | 0.437 |
| 5--1 | -50 | 55 | 10 | 10 | 4.6 | 4.55 | 4.46 | 4.54 | 0.454 |
| 5--2 | -50 | 55 | 10 | 10 | 4.21 | 4.39 | 4.34 | 4.31 | 0.431 |
| 6--1 | -60 | 55 | 10 | 10 | 4.35 | 4.38 | 4.33 | 4.35 | 0.435 |
| 6--2 | -60 | 55 | 10 | 10 | 4.52 | 4.53 | 4.51 | 4.52 | 0.452 |
| 6--3 | -60 | 55 | 10 | 10 | 4.45 | 4.56 | 4.47 | 4.49 | 0.449 |
| 7--1 | -70 | 55 | 10 | 10.02 | 4.46 | 4.54 | 4.52 | 4.51 | 0.451 |
| 7--2 | -70 | 55 | 10 | 10 | 4.61 | 4.71 | 4.66 | 4.66 | 0.466 |
| 7--3 | -70 | 55 | 10 | 10.02 | 4.45 | 4.54 | 4.53 | 4.51 | 0.451 |
| 8--1 | -84 | 55 | 10 | 10 | 4.52 | 4.52 | 4.55 | 4.53 | 0.453 |
| 8--2 | -84 | 55 | 10 | 10 | 4.58 | 4.62 | 4.6 | 4.6 | 0.460 |
| 1--1 | -100 | 55 | 10 | 10 | 4.79 | 4.78 | 4.59 | 4.72 | 0.472 |
| 1--2 | -100 | 55 | 10 | 10 | 4.72 | 4.75 | 4.74 | 4.74 | 0.474 |
Table 2 is the Dynamic Fracture Toughness test findings
Table 2
| Test number | Test temperature ℃ | K Id(MPam 1/2) |
| 0--1 | 26 | 369.98 |
| 0--2 | 26 | 338.11 |
| 2--1 | -20 | 198.67 |
| 2--2 | -20 | 295.27 |
| 2--3 | -20 | 271.63 |
| 4--1 | -40 | 268.31 |
| 4--2 | -40 | 254.66 |
| 5--1 | -50 | 297.5 |
| 5--2 | -50 | 270.47 |
| 6--1 | -60 | 296.99 |
| 6--2 | -60 | 121.36 |
| 6--3 | -60 | 213.51 |
| 7--1 | -70 | 330.42 |
| 7--2 | -70 | 84.24 |
| 7--3 | -70 | 310.83 |
| 8--1 | -84 | 82.11 |
| 8--2 | -84 | 73.54 |
| 1--1 | -100 | 88.42 |
| 1--2 | -100 | 87.22 |
It more than is a complete set of dynamic test results of certain deck of boat steel.Test findings analysis according to Dynamic Fracture Toughness can very accurately draw: the safe working temperature of this material is being the dangerous work temperature section for more than-60 ℃ below-60 ℃.Since inevitably there are various defectives in the large-scale steel structure members, particularly important with micro-crack.Therefore working if any collision below-60 ℃ or shaking generation, expansion and the fracture that material just may cause crackle owing to the existence of defective.
The present invention is by finishing a complete set of dynamic fracture-mechanics test and data analysis function automatically, and its result is accurately complete.For fracture behaviour under various loading velocities of metal and other materials, the Mechanical Properties analyses such as the temperature variant rule of anti-break capability, the temperature variant rule of material fracture behaviour and Dynamic Fracture Toughness thereof of material provide foundation.
Claims (9)
1, a kind of dynamic fracture-mechanics testing system, it is characterized in that: comprise dynamic load mechanism (1), dynamic fracture image acquisition units (2), dynamic signal acquisition unit (3), temperature control unit (4), automatic Verification unit (5) and data processing unit (6); Wherein, dynamic load mechanism (1) is connected with dynamic fracture image acquisition units (2) and dynamic signal acquisition unit (3), also link to each other with automatic Verification unit (5) simultaneously with temperature control unit (4), dynamic fracture image acquisition units (2), dynamic signal acquisition unit (3) and temperature control unit (4) link to each other with data processing unit (6) simultaneously, from the data of dynamic fracture image acquisition units (2) and dynamic signal acquisition unit (3) and temperature control unit (4) collection enter simultaneously data processing unit (6) also by data processing unit (6) thus carrying out data processing draws test findings and analysis result.
2, dynamic fracture-mechanics testing system according to claim 1, it is characterized in that said dynamic load mechanism (1) is equipped with main shaft (1.3) on the top of mainframe (1.1), it is provided with automatic hanging and swinging mechanism (1.2), on main shaft (1.3), be equipped with pendulum (1.4), the rear portion is furnished with drive motor (1.5), and the below of mainframe (1.1) is provided with jaw (1.6) and is used for supporting sample (1.7).
3, dynamic fracture-mechanics testing system according to claim 2, it is characterized in that said automatic hanging and swinging mechanism (1.2) is provided with extension pendulum hook (1.8), be used for tangling pendulum (1.4), hanging and swinging mechanism (1.2) changes the angle of hanging pendulum under the effect of drive motor (1.5) automatically.
4, dynamic fracture-mechanics testing system according to claim 1 is characterized in that said dynamic fracture image acquisition units (2) includes image acquisition units (2.1), sample (1.7), microscope (2.2) and image analysis processing unit (2.3); Image analysis processing unit (2.3) to image acquisition units (2.1) and microscope (2.2) the data of the sample of gathering (1.7) carry out analyzing and processing and will analyze data sending into data processing unit (6).
5, dynamic fracture-mechanics testing system according to claim 1, it is characterized in that said dynamic signal acquisition unit (3) comprises rotary encoder (3.1), dynamic load sensor (3.2), synchronizer trigger (3.3) and data collecting card (3.4), import data such as dynamic load into data collecting card (3.4) by synchronizer trigger (3.3) and by rotary encoder (3.1) and dynamic load sensor (3.2), send into data processing unit (6) then.
6, dynamic fracture-mechanics testing system according to claim 1, it is characterized in that said temperature control unit (4) comprises ECU (Electrical Control Unit) (4.1), high-low temperature chamber (4.2), data transmission unit (4.3), by the temperature of ECU (Electrical Control Unit) (4.1) control high-low temperature chamber (4.2), pass through data transmission unit (4.3) again the temperature data of sample is transferred to data processing unit (6).
7, dynamic fracture-mechanics testing system according to claim 1 is characterized in that said automatic Verification unit (5) carries out automatic Verification by several calibrating unit to dynamic fracture-mechanics testing system; Wherein, by the hunting period of calibrating unit (5.1) measurement pendulum (1.4), realize that by calibrating unit (5.2) pointwise of energy is demarcated, by the energy loss of calibrating unit (5.3) detection load maintainer (1).
8, according to claim 1 or 4 or the 5 or 6 described dynamic fracture-mechanics testing systems of arbitrary claim, it is characterized in that said data processing unit (6) includes several data input signals and several data processing units, several data input signals enter several data processing units of its correspondence and finish the mechanics property analysis of sample under dynamic load (1.7); Wherein, data processing unit (6) will come from the signal 1a input ballistic work processing unit (6.1) of data collecting card (3.4); The signal 2a input scale transformation unit (6.2) that will come from data collecting card (3.4); The signal 3a input data storage cell (6.3) that will come from data collecting card (3.4); The signal 4a input data fitting unit (6.4) that will come from data collecting card (3.4); With signal 4a signal 5a while input curve integral unit (6.5); With signal 4a, 5a, 6a and signal 7a input curve drawing unit (6.6); Dynamic fracture-mechanics analytical calculation unit (6.7) calculates the dynamic fracture-mechanics data of material and exports result by output device unit (6.8) by the processing of above each data processing unit.
9,, it is characterized in that the range of control of said temperature control unit (4) can be adjusted and can be incubated between-100 ℃～+ 1000 ℃ according to claim 1 or 6 described dynamic fracture-mechanics testing systems.
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