Research into fatigue strength moves up a gear
A
BMPTA British Mechanical Power Transmission Association product story
Edited by the Engineeringtalk editorial team
Jul 23, 2003
A new development programme to improve the fatigue strength and rating of high performance gears has been launched by the British Mechanical Power Transmission Association (BMPTA).
A new development programme to improve the fatigue strength and rating of high performance gears has been launched by the British Mechanical Power Transmission Association (BMPTA).
The new research will develop cost effective specifications for heat treatment and shot peening of case carburised and nitrided gears.
It will also resolve outstanding issues relating to fatigue strength data given in BS-ISO6336.
The BMPTA says that most importantly the research programme will follow up previously identified "promising techniques" for significantly improving bending fatigue strength.
The research includes work to quantify the improvements which can be achieved by root grinding combined with shot peening on both carburised and nitrided gears and by vacuum carburising and superfinishing.
The programme will also investigate the fatigue strength at long life and the influence of oils and oil additives on gear strength.
It's a collaborative research and development programme that follows the successful work carried out under the umbrella of the BMPTA - formerly the British Gear Association - by 13 companies as well as the Design Unit of the University of Newcastle from 1996 until last year.
The BMPTA says that the six years of collaborative research and development has already generated a "massive" amount of important data for surface and bending fatigue strength and significantly "improved understanding" of gear failure.
The BMPTA is now actively seeking additional partners for this next phase and companies with an interest in taking part in the collaborative research project are invited to contact Andy Harry at the BMPTA.
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