Published online by Cambridge University Press: 28 July 2016
The part played by major structural strength tests in aeroplane design is well known. Without such tests the standard of safety for aircraft would soon decline and excess weight, as an insurance against structural failure, would become a general rule. Considerable time and effort are expended therefore in the early stages of each new design of aeroplane to check by actual test whether its strength meets requirements. It is clearly reasonable to devote some little further time and effort to the study of methods and technique for strength testing in general.
Note on page 706 * In practice there is sometimes a small amount of reversible travel within definite limits and heavily damped, which for the purpose of general discussion has been ignored.
Note on page 713 * In a paper “The de Havilland Wing Test Rig” (Journal R.Ae.S., April 1946), W. Hampton suggests differential pressure as a means for restoring the rotational position of the specimen by deliberate manual intervention.