The transportation environment has kept on changing greatly, as the change is made in the distribution system and product precision gradation. In consequence it is becom- ing crucial to view what transportation environment a packaged product is subject to. In order to measure and record the dynamic transportation data on vibration, shock, ctc., the data recorders have been developed in the US over 7 or 8 years ago. The re- corders, which entail computer process of the measurement data unlike the conven- tional mechanical recorders, have been utilized in various fields, as the personal com- puter has spread widely.
展开▼
