HITS-X Series High Speed Impact Testing Machines
Fracture Observation in Puncture Impact Testing on Glass
In this article, we introduce the results of fracture observation in a high speed puncture testing conducted on two types of tempered glass and untempered glass. The test results clarified that the maximum test force at the time of fracture increased if the glass was toughened, and that the maximum test force correlated with the number of cracks and the crack growth rate
High Speed Tensile Test of High-Strength Steel
In order to guarantee a safe and efficient design of automobile parts that may undergo impacts (high speed loads), high speed tests must be conducted to investigate the relationship between the material tensile strength and the strain rate. In this work, the tensile strength-strain rate relationship has been evaluated with tensile tests at a speed ranging from 0.0001 m/s to 5 m/s. Grip teeth featuring a pin allowed to conduct the tests without slippage. The results showed that tensile strength at high speed is 10% higher than the one measured at low speed.