Quasi-Static and Impact Compressive Behavior of Water-Resistant Corrugated Fiberboard
Hidetoshi KOBAYASHI, Masashi DAIMARUYA and Kouji SAKURADA
Abstract:In this study, the compressive deformation behavior of water-resistant corrugated fiberboard was investigated by quasi-static and impact compressive tests using a stress bar apparatus. The effect of water absorbed in the corrugated fiberboards on the compressive strength and absorbed energy up to the beginning of the densification in the tests was also examined using dry and soaked specimens. It was found that the absorbed water ratio of corrugated fiberboard increases following a power law of soaking time. The strength and the absorbed energy for the corrugated fiberboards decrease linearly with the increase of the absorbed water ratio. These decreasing rates to each dry specimen show similar tendency regardless of waterproof property added to the individual corrugated fiberboards. The decrease of the strength and the absorbed energy due to the increase of absorbed water becomes small when corrugated fiberboards are compressed dynamically. The strength and the absorbed energy obtained from impact tests are much greater than those obtained from static tests. Key Words:Impact compression, Absorbed energy, Corrugated fiberboard, Water-resistant, Absorbed water ratio