Abstract
Introduction
Range of Investigations . . . 4
Material (Tension and Torsion Tests) . . 5
Static Compression Tests . . . 7
Apparatus for Fatigue Testing (with diagram) 8
Fatigue Test Formulae . . . 9
Fatigue Tests (Description of two) . . 11
Further Fatigue Tests (Series 1, 2, 3, 6, 9, 12 and 15). 14
Fatigue Tests at Elevated Temperatures . 20
Electric Heater (with diagram) . . . . 21
Fatigue Tests of Batches of Similar Springs: -
(a) Series 12(a) 22
(b) Series 4(a) . . . 27
(e) series 15(a) . . . . . 32
(d) Series 2(a) and 5(a) . . . 40
Remarks . . . 42
Conclusions . . . 44
References 53
Tables and Diagrams:- . . .
(a) Static Compression Tests . .
(b) Fatigue Tests . . .
(c) Representative Compression Curves
(d) Endurance Curves . . . P.53.
