MPM Product News

MPM continually invents and develops new technologies to serve our customers needs.  This web page summarizes several new products which are, or will soon be, available for purchase.  Please contact us if you have any questions or require additional information.

Drop Tower Direct Energy Measurement

Measurement of the energy absorbed by a test specimen in a drop tower test machine requires that the striker be instrumented with strain gages.  MPM has invented a new technology that enables direct measurement of the specimen absorbed energy without the need for an instrumented system.  This technology is much less expensive when compared with instrumented system technology.  However, instrumented systems do provide load-deflection data which is important in some testing applications.  One important advantage of direct absorbed energy measurement is the fact that it will be possible to verify the absorbed energy measured using instrumented strikers.

Automatic Charpy Test Machine

MPM has developed the world’s first fully automatic Charpy impact test machine.  The machine receives a test specimen from a 150-specimen magazine, reads the specimen ID, transfers the specimen to the anvils and centers the specimen.  The specimen is automatically heated or cooled to the desired test temperature.  Subsequently, the pendulum is released, impacting the specimen and recording the energy and the instrumented striker force-deflection data.  See our Automatic Charpy Machines page.

Percent Shear Determination

The percentage of shear fracture area is a direct quantification of the transition in the fracture modes as temperature increases.  Many laboratories use the ASTM photograph comparison method to determine percent shear.  However, this method is very subjective and leads to results with large uncertainties.  MPM has developed a low cost imaging system and quantification software to address this problem.  The Charpy specimen fracture surface image is acquired on computer, the brittle and ductile fracture areas are identified, and the software automatically integrates the area to determine the percent shear area.