Abstract:
HDD Manufacturing composed of many assembly and test processes such as PSA, RSA and gramload test. The gramload tester uses HSA that already known gramload value, golden unit, for calibration frequently. The golden unit is costly to manufacturing due to its short life time. To design new robust golden unit, knowledge on stiffness of thin sheet is very important. Therefore, this study was to investigate relation between stiffness and suspension-like thin sheet. gramload measurement jig and device was designed and fabricated. Suspension with various angles was tested for gramload. It was found that gramloadof suspension increase with increasing suspension angle. The most appropriated suspension angle might be 8-9 degree with 99% confident.