TW326495B - Impact tester with air hammer - Google Patents

Abstract

A kind of impact tester with air hammer includes the following items: - a machine containing air pressure chamber; there^s an admission port in the bottom of the chamber connecting to a switching valve. The valve is connected with a pump which provides air pressure for the chamber through the switching valve. - a film plate, located in the air pressure chamber corresponding to the admission port - a straight hollow pipe, located above the film plate, extended to the top of the tester and fixed with it. When the chamber blows air through the admission port, the film plate will arrive at the intake of the pipe by the updraft - a impact block within the hollow pipe - testing deck fixed on the top of the tester. There is an opening corresponding to the hollow pipe and mounted with a exchangeable cushion block of different hardness - as the structure described above, the test piece is fixed on the top of the tester and mounted with plural sensors connecting to a computer. When the air pressure boosted by the pump from the chamber reaches the setting point, the air is stopped entering the chamber, then the air pressure forces the film plate to move downwards and not touching with the intake of the pipe so that the air enters the hollow pipe and forces the impact block to slam the cushion block and transfer the force onto the test piece. The impact strength is inspected by the sensors and transmitted the impact data to the computer.