足尺人造板力学性能无损检测样机测控系统研究

发布时间：2018-01-07 17:08

本文关键词：足尺人造板力学性能无损检测样机测控系统研究　出处：《北京林业大学》2016年硕士论文　论文类型：学位论文

【摘要】：足尺人造板是指国内外人造板生产和销售中最常见的,幅面为2.44×1.22 m标准尺寸的成品人造板。目前国内人造板生产厂家均将大板材裁成小试件,然后对小试件进行破坏性实验来检测人造板的力学性能。这种方法不仅对人造板产生严重的浪费,而且检测效率特别低,更重要的是只适用于抽检。基于振动原理的足尺人造板力学性能无损检测,可以很好地解决目前存在的问题。本论文在已有足尺人造板力学性能无损检测样机机械结构的基础上,为其设计了测控系统,包括系统的硬件和软件,实现检测样机对足尺人造板的自动搬运及力学性能的无损检测。论文的主要工作内容如下：1)通过对足尺人造板力学性能无损检测样机运动控制系统的需求分析,设计足尺人造板多模式自动搬运系统,实现检测样机对人造板的全自动搬运。2)通过对无损测试系统的需求分析,设计检测样机测量系统,实现足尺人造板弹性模量、储能模量、损耗模量、质量、厚度、密度等参数的自动化无损检测。3)设计测控系统的通信模块,使检测样机运动控制系统和测试系统有机融合,实现足尺人造板的自动搬运和力学性能无损检测两功能协调统一。4)根据检测样机的测量目标,进行人造板在线测厚检测试验、人造板在线称重试验、人造板力学性能无损检测试验及人造板检测效率的测定试验,验证样机的可靠性、实用性及高效性。检测样机调试和试验结果表明,本文所设计的足尺人造板力学性能无损检测样机测控系统,达到了本论文所依托课题的要求。
[Abstract]:Full-scale wood-based panels are the most common in the production and sale of wood-based panels at home and abroad. Finished wood-based panels with a width of 2.44 脳 1.22 m. At present, the domestic manufacturers of wood-based panels all cut the large plates into small test pieces. The mechanical properties of wood-based panels are tested by destructive experiments. This method not only causes a serious waste of wood-based panels, but also has a very low detection efficiency. More importantly, it can only be applied to spot check. Based on vibration principle, the mechanical properties of full scale wood-based panels are nondestructive testing. In this paper, based on the mechanical structure of the prototype machine, the measurement and control system, including the hardware and software of the system, is designed. Automatic handling of full scale wood-based panels and nondestructive testing of mechanical properties are realized by testing prototypes. The main work of this paper is as follows: 1). The requirement of motion control system of full scale wood-based panel is analyzed by nondestructive testing of mechanical properties of prototype. The multi-mode automatic handling system of full scale wood-based panel is designed, and the automatic handling of wood-based panel is realized by testing prototype. Based on the requirement analysis of non-destructive testing system, the measuring system of testing prototype is designed. The communication module of the measurement and control system is designed by realizing the automatic nondestructive testing of the parameters such as elastic modulus, energy storage modulus, loss modulus, mass, thickness, density and other parameters of the full scale wood-based panel. The motion control system of the test prototype and the test system are combined organically to realize the automatic handling and mechanical performance nondestructive testing of the full scale wood-based panel. 4) according to the measurement objectives of the test prototype. In order to verify the reliability of the prototype, the on-line thickness measurement test of wood-based panels, the on-line weighing test of wood-based panels, the nondestructive testing tests of mechanical properties of wood-based panels and the testing efficiency of wood-based panels were carried out. The test results show that the non-destructive testing system for mechanical properties of full-scale wood-based panels has met the requirements of this thesis.
【学位授予单位】：北京林业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TH878;TP273

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