The invention discloses an
impact test device and method used for a rock or concrete
test sample. The
impact test device comprises a launching
system, a fixing support, an electronic
laser velocimeter, a high-speed camera shooting
system and a
test sample baffle, the
test sample baffle and the launching
system are arranged oppositely, and the electronic
laser velocimeter is used for detecting thespeed of the launched test sample; the launching system comprises a
nitrogen steel cylinder, a gas storage room, a launching
barrel, a
sabot and a
sabot and test sample separating device, and the gasstorage room is connected with the launching
barrel through an electromagnetic switch. During usage, the gas storage room is filled with gas through the
nitrogen steel cylinder, then the electromagnetic switch is rapid switched on, gas flows push the
sabot with the test sample to conduct launching rapidly from the launching
barrel, then, the test sample and the sabot are separated, the test sampleimpacts on the test sample baffle,
impact data of the test sample is recorded through the electronic
laser velocimter and the high-speed camera shooting system, and the
transient stress strain fieldof the test sample impact is analyzed through 3DDIC
software. The test device is easy and convenient to assemble, efficient in test process and high in
repeatability.