A pendulum impactor for measuring the resistance of materials to jerk strains
Abstract
An instrument for quantifying the strength of materials exposed to high rates of strain is described. It is composed of an impactor and a transmistter bar. Impact velocities are 100 to 400 times/sec. Normal tensile testing bars or special shaped testing bodies may be used. The dynamic properties of the instrument were determined by experiments and computer simulation. The response of the instrument is incorporated into a computer code which is used to transform the captured signals to highly accurate stress-strain diagrams.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- June 1985
- Bibcode:
- 1985STIN...8617725S
- Keywords:
-
- Impact Tests;
- Mechanical Oscillators;
- Strain Rate;
- Tensile Strength;
- Computerized Simulation;
- Elongation;
- Impact Strength;
- Pendulums;
- Stress-Strain Diagrams;
- Instrumentation and Photography