摘要 : We have carried out experimental investigation of eddy current non-destructive evaluation using a high-T-c SQUID magnetometer. By mapping out field distributions with the SQUID magnetometer, flaws 10 mm below the surface in conduc... 展开 We have carried out experimental investigation of eddy current non-destructive evaluation using a high-T-c SQUID magnetometer. By mapping out field distributions with the SQUID magnetometer, flaws 10 mm below the surface in conducting aluminum structures can be clearly identified. We have also designed and fabricated a first-order planar gradiometer on a large area LaAlO3 substrate with a baseline of 16 mm. [References: 3] 收起