The test by the free fall tester has a problem that cannot simulate perfect surface drop of the container, so it might be some influence on shock acceleration in the container, in other words, it might be lowered the precision of the test result. Moreover, it is also understood about influence of drop angle from the following contents, the regulation of the test, JIS-Z0202 and ASTM-D5276, desires no more than 2 degrees angle between the flat face of the container and the impact surface. However a few reports about the influence of the drop angle to the impact acceleration have be seen. In this paper, the drop angle of container is analyzed by the 3D high speed camera, and the 3D accelerations inside container are also measured. In the result, it could be understood that the drop angle is caused that is decreased the peak acceleration. And it has understood that the drop angle is influenced by the position of center of gravity, mass, drop height and dropping surface area of the container. Accordingly, it has indicated that the test result has a widely error by the drop angle. To carry out the accurate drop test, the drop angle should be estimated by using 3 axis accelerometers inside the package at the free fall test.

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Transport package is often stacked in warehouse during distribution. The stacking transport packages have received static load. We confirm whether a corrugated box has enough static compressive strength by the compression test. However, we cannot simulate the actual buckling damage of box by the static compression test of a box. In this study, we propose the equivalent stacking box perimeter to estimate the static compression strength. It is found to be able to calculate the stacking lifetime to have considered the tier.

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