Abstract
The extension-against-time curves of lead wires that have been subjected to rapid strain just before the experiment may be expressed by the Andrade creep equation l=l0(1+βtfraction one-third) exp (kt), using the same constants as those which satisfy the creep of the metal under the same constant stress, but with the t value associated with β replaced by (t+t0), where t0 is a constant for a given experiment, its value increasing with increasing pre-strain. While for pre-strains less than 10% the value of k is unchanged by the pre-strain, for greater pre-strains the k-flow is also modified and appears to approach more nearly to a linear variation with stress.