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JLT-Ⅱ mechanical comprehensive experimental platformh -
JLT-Ⅱ mechanical comprehensive experimental platformh
- 類型
JLT-Ⅱ mechanical comprehensive experimental platform combines six kinds of devices, namely, bending of straight beam, equal strength beam bending, bending and torsion combined stretching and compression deformation, dynamic beam, impact beam and so on. It is combined into a comprehensive experimental equipment with dynamic and static testing functions. It is a kind of multi-function experiment system suitable for the teaching of mechanical experiment. With this experimental system, new experimental projects can be studied and developed, and the test technology of mechanical test can be improved from static to dynamic transient, and the technical skills are gradually improved, and the mechanical experiment is from verification design synthesis research to a variety of types to improve the quality of teaching.
Summary
JLT-Ⅱ mechanical comprehensive experimental platform combines six kinds of devices, namely, bending of straight beam, equal strength beam bending, bending and torsion combined stretching and compression deformation, dynamic beam, impact beam and so on. It is combined into a comprehensive experimental equipment with dynamic and static testing functions. It is a kind of multi-function experiment system suitable for the teaching of mechanical experiment. With this experimental system, new experimental projects can be studied and developed, and the test technology of mechanical test can be improved from static to dynamic transient, and the technical skills are gradually improved, and the mechanical experiment is from verification design synthesis research to a variety of types to improve the quality of teaching.
Test-bed technical index
1.Load range： 0~9000N | 2.Leverage ratio：1:2 1:3 1:4 1:8 |
3.Load sensitivity： 1N | 4.Load error：≤2% |
5.Overload capacity： 150% | 6.Shape size：900mm×600mm×1000mm |
7.Weight： 95 ㎏ |
Performance index of static and dynamic strain test system
1.working voltage： 220V 50Hz | 2.Number of channels：10 circuit（dynamic 2 circuit） |
3.Range： | 4.Bridge way: full bridge, half bridge, 1/4 Bridge |
5.Automatic bridge balance：≤ 2s | 6.Sampling frequency multifile selection 1、10 、100Hz |
7.sensitivity： | 8.Linearity： ±1% |
9.Precision： ±0.5% | 10.Signal-to-noise ratio： |
11.Frequency Response： 0~10KHz |
A test project that can be set up at the experimental platform
NO. | category | Experimental project | NO. | category | Experimental project |
1 | Straight beam | 1-1 Pure bending stress experiment | 11 | Combined deformation | 3-1Test of main stress of strain flower |
2 | 1-2 Experimental stress experiment on bending of laminated beams | 12 | 3-2Test of bending stress in bending and torsion group | ||
3 | 1-3 Test of bending stress of composite beams | 13 | 3-3Test of torsion shear stress in bending and torsion groups | ||
4 | 1-4 Determination of modulus of elasticity and Poisson's ratio of materials | 14 | 3-4Experiment on bending center of groove beam | ||
5 | Equal strength beam | 2-1 Test of bending positive stress of equal strength beam | 15 | 3-5Measurement experiment of internal force of static indeterminate circle | |
6 | 2-2 Application experiment of measuring electric bridge | 16 | Tension and pressure deformation | 4-1 Tensile bending combined deformation experiment | |
7 | 2-3 Experiment on deflection measurement of equal strength beam | 17 | 4-2 Test of elastic constants of materials | ||
8 | 2-4 Calibrating experiment of strain gauge sensitivity | 18 | 4-3 Pressure bar stabilization experiment | ||
9 | 2-5 Test of transverse effect coefficient of strain gauge | 19 | dynamic test | 5-1 Experiment of transient strain measurement | |
10 | 2-6 Experiment of measuring elastic constants of materials by electric measurement | 20 | 5-2 Dynamic stress measurement experiment of dynamic beam | ||
21 | 5-3 Vibration experiment |
User preparation
1. rulers and other tools;
2. experiment table;
3. use environment (including power supply, wiring board, network cable, etc.).
