描述了参数估计在激光脉冲法测量热扩散率中应用的基本原理,研究了试验过程中热损失对试样背面温升的影响,计算了热扩散率、热损失系数和能量系数的敏感性系数,依据单纯形搜索法原理,采用MATLAB软件对试验数据进行了参数估计运算,并验证其可行性.
参考文献
[1] | Parker W J;Jenkins R J;Butler C J .Flash method of determining thermal diffusivity,heat capacity,and thermal conductivity[J].Journal of Applied Physics,1961,32(09):1679-1684. |
[2] | 薛健.激光在理化检测中的应用[M].长沙:中南工业大学粉冶所,1986 |
[3] | 顾毓沁 .参数估计在测量热物性中的应用[J].工程热物理学报,1987,8(01):83-86. |
[4] | Beck J V;Dinwiddie R .Parameter estimation method for flash thermal diffusivity with two different heat transfer coefficients[R].Uak Ridge National Lab.,TN.CONF-9519111-4,1995. |
[5] | Taylor R E;ClarkⅢ L M .Radiation loss in the flash method for thermal diffusivity[J].Journal of Applied Physics,1975,46(02):714-719. |
[6] | 袁亚湘.非线性优化计算方法[M].北京:科学出版社,2008 |
[7] | Cape J A;Lehman G W .Temperature and finite pulsetime effects in the flash method for measuring thermal diffusivity[J].Journal of Applied Physics,1963,34(07):1909-1913. |
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