Bose Corp.’s Electroforce Systems Div., Eden Prairie, Minn., recently developed a line of mechanical test instruments based on the same frictionless linear motor used in Bose’s audio speakers.

Bose Corp.’s Electroforce Systems Div., Eden Prairie, Minn., recently developed a line of mechanical test instruments based on the same frictionless linear motor used in Bose’s audio speakers. The linear motor has a moving permanent magnet and two static coils that produce oscillations that can be tuned to perform a wide range of tests, including tensile, fatigue, creep, viscoelasticity, stress relaxation, and crack growth. Electroforce instruments typically come with force levels of 22 to 7000 N. A new model with 15,000 N has a frequency range of up to 100 Hz and 2 in. of travel. Bose says electromagnetic drive is more reliable and effi cient than hydraulic power. The motors don’t require water cooling and simply plug into a wall socket. Tel: (952) 278-3070 • www.bose-electroforce.com Meanwhile, another test instrument supplier that may be unfamiliar to U.S. plastics processors is 01dB Inc., Novi, Mich. (sub. of 01db-Metravib in France), a maker of oscillating material test instruments. It offers test instruments with force levels of 50 to 450 N, including advanced DMA, TMA, creep, stress-relaxation, and fatigue test capabilities. The newest model is a compact desktop DMA (dynamic mechanical analysis) tester. The DMA 50 (50 N capacity) has the unusual capability to perform tests on samples submerged in liquids such as water or oil to test environmental effects on mechanical performance. Tel: (248) 592-2990 • www.dma-instruments.com

O1dB Inc.
28100 Cabot Dr. #100 Novi, MI 48377
Phone (866) 442-7382