Portable tester solves Dunlop problems

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 April 2000




(2000), "Portable tester solves Dunlop problems", Aircraft Engineering and Aerospace Technology, Vol. 72 No. 2. https://doi.org/10.1108/aeat.2000.12772bab.010



Emerald Group Publishing Limited

Copyright © 2000, MCB UP Limited

Portable tester solves Dunlop problems

Portable tester solves Dunlop problems

Keywords: Indentec, Dunlop Aviation, Hardness’testing

It is reported that one of the latest handheld hardness testers has helped Dunlop Aviation Division solve awkward access problems in checking safety-critical components at its Coventry plant.

Chiefly aircraft wheels and aircraft brake parts, the components are sometimes difficult to test on a conventional bench machine. Some are too heavy, large or remote; others are too roundly shaped to be easily accommodated on a test table.

With the pocket-sized portable tester from Indentec, Dunlop can now obtain on-the-spot readings and print-outs of hardness on any component, whatever its size, shape or location.

Importantly for the company, the digital instrument can be applied from any direction (including upside down), saving any need to manhandle or manoeuvre specimens.

Unlike its older predecessor, the new Indentec unit has reportedly proved to be very easy to use, enabling operators to achieve consistently repeatable results without any special training.

Although all the popular hardness scales are available, Dunlop uses the system mostly for Vickers testing, with some tests to the Rockwell scale.

Hardnesses are calculated automatically to plus/minus 0.5 per cent accuracy. The reading is registered on the tester's built-in display along with test scale, material tested, number of tests, running average hardness, test direction and ultimate tensile strength. The results are recorded by the accompanying infra-red printer for logging in records of hardness levels.

Details available from Indentec Hardness Testing Machines Ltd. Tel: +44 (0) 1384 896949.

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