玻璃钢夹心结构设计和工艺实现
   Brief today
・History 三明治夹层结构的历史
・What is it? 介绍
・Components  组成部分
・How does it Work? 工作原理
・Engineering Definitions 结构力学定义
・Theory 结构力学
・Structure design 结构设计
・Process and Manufacturing 工艺实现实例
Sandwich History
・1930s - Invention of structural adhesives allows application of bonded sandwich composites
・WWII - mass produced Mosquito aircraft utilizes sandwich panels with veneer faces and balsa core
・1940s - Theoretical works on structural sandwich theory beginning to develop
・1940 - 1950 - Honeycomb comes into use as a core material
・1950 - 1960 - PVC and PUR foam core materials developed