制造业在开发产品和工艺时一直依靠反复试验。原型是为测试而制造的，测试结果用于改变零件的设计，使其工作，直到达成妥协。不幸的是，这种方法不仅无效，而且在时间和金钱上都很昂贵。此外，由此产生的产品或过程不是最佳的。本文描述了建立计算机模型所需的一些材料测试，并介绍了代表加拿大和美国制造商成功完成的WIDL研究。

The manufacturing sector has always relied on trial and error in developing products and processes. Prototypes are built for testing, results of which are used to alter the design of a part in such a way to make it work until arriving at a compromise. Unfortunately, this approach is not only ineffective, it is costly in both time and money. Further, resulting products or processes are not optimum. This paper describes some material tests necessary to building computer models and presents studies WIDL successfully completed on behalf of manufacturers in Canada and the United States.