FATIGUE TESTS OF GROUSERS FOR AMPHIBIAN TRACTORS
DAVID TAYLOR MODEL BASIN WASHINGTON DC
Pagination or Media Count:
The amphibian tractor, or LVT, runs on an endless track having cleats, or grousers, to dig into the ground or push against the water. These grousers are weldments, the web being welded to the base plate which is, in turn, bolted to the drive chain. In service the welds of the grousers were cracking under fatigue loads. The David Taylor Model Basin was asked to test several designs under a bending fatigue loading which would give the same type of failure as that occurring in the field. Four different basic designs made up in cast and welded steel and in cast aluminum were tested to determine the design and material which had the greatest resistance to fatigue failure.
- Surface Effect Vehicles and Amphibious Vehicles