多数实用超导体都是由塑性金属包覆超导细丝(常为脆性材料)构成的。对超导体来说,保持一个非常高的电流携带能力是非常重要的,并且能使其不会因为导线在盘卷操作中出现的弯曲力、温度交变应力或洛仑兹力的作用而降低。实际应用中超导体要受到许多外力的作用,如弯曲应力、热收缩 Most practical superconductors are made of plastic-coated superconducting filaments (often brittle materials). It is important for superconductors to maintain a very high current carrying capacity and to prevent them from being reduced by the effects of bending, temperature alternating stress or Lorentz forces that the wire experiences during coiling operations. In practice, superconductors are subjected to many external forces such as bending stress and thermal contraction