| 摘要: |
| 目的 缓解托盘用人造板抽样检测时资源浪费且费时费力的现状，推进实现常用板材的无损检测。方法 采用纵向共振法对9层胶合板、单板层积材及一种工厂用新型层积材进行共振频率的检测并计算得到动弹性模量，分析动弹性模量与静弹性模量、静曲强度之间的相关性。结果 胶合板、单板层积材的动弹性模量与静弹性模量、静曲强度之间分别在0.001水平上具有较强的线性相关性，新型层积材的动弹性模量、静曲强度、静弹性模量在0.001水平上也具有一定的线性相关性，较胶合板及单板层积材相关性稍差。结论 3种结构人造板弹性模量与静曲强度均存在一定的线性相关性，纵向共振法在新型层积板材上的可应用性较胶合板及单板层积材略差。 |
| 关键词: 木质托盘 静弹性模量 动弹性模量 静曲强度 |
| DOI： |
| 分类号:TB484.2 |
| 基金项目:北京市教委共建项目-重点学科建设项目 |
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| Relationship between MOE and MOR of Wood Composite Panel Used in Trays |
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KANG Liu1,2, CHU De-miao1,2, ZHAO Mei-xia1,2, MU Jun1,2
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1.The Key Laboratory of Wooden Materials Science and Application of the Ministry of Education, Beijing 100083, China;2.Beijing Forestry University, Beijing 100083, China
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| Abstract: |
| Wood composite panels used in trays would be destructive during its sampling process, which causes the waste of resources and time. The work aims to alleviate this situation and promote nondestructive testing. Longitudinal wave resonance method was used to test the resonant frequency and calculate the dynamic MOE of 9-layer plywood, LVL and a new type of LVL board. The correlation among dynamic MOE, static MOE and MOR was analyzed. The results showed that the dynamic MOE, static MOE and MOR respectively had strong linear correlation at the 0.001 level of plywood and LVL while they had certain linear correlation at the 0.001 level of new-LVL, slightly inferior to plywood and LVL. In conclusion, MOE and MOR of three wood composite panels have certain linear correlation. Applicability of longitudinal wave resonance method in new-LVL is slightly poorer than that in plywood and LVL. |
| Key words: wooden trays static MOE dynamic MOE MOR |
