Abstract
The influence of mechanical deformation on critical current has been studied, in order to assess the effect of sample handling on the current carrying capabilities of Bi-2223/Ag tapes. Transport critical current was measured at 77 K using a criterion. The effect of progressive bending of the tapes on grain connectivity and flux pinning were investigated by measuring against H. It was observed that bending can affect weak and strong links to a different degree. Damaged samples have a low , but often have a large critical current which is carried through strongly linked paths, compared to carried through weak links. The influence of tensile deformation on was also studied. was found not to degrade until the deformation of the tape approached its elastic limit.
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