A modified evaluation method to reduce finite pulse time effects in flash diffusivity measurement

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 无机材料分析测试中心 > 期刊论文

	A modified evaluation method to reduce finite pulse time effects in flash diffusivity measurement
	Tao, Ye; Yang, Liping; Zhong, Qiu; Xu, Zijun; Luo, Caiyun
刊名	REVIEW OF SCIENTIFIC INSTRUMENTS
	2015-12-01
卷号	86 期号:12 页码:124902-1
英文摘要	A modified evaluation method for laser flash is proposed. In this method, the moment of laser-heating cutoff time is considered as zero point. The penetration depth and formula equation of the sample temperature distribution are obtained with the approximate analytical solution before time zero (during laser heating) for the physical model of a continuously heated half-infinite, well-distributed sample. The weighted-average and approximate-equation methods are then used to quantitatively determine the laser effect depth, which leads to the formulation of a modified evaluation method in flash thermal diffusivity measurement. Results of the simulation calculations and experiments confirm the correctness of the modified method, which remarkably increases flash method applications. The modified method is applicable only to cases in which delta(x) does not exceed the sample thickness (root 12 alpha tau(0) <= L) during laser heating. (C) 2015 AIP Publishing LLC.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Instruments & Instrumentation ; Physics, Applied
研究领域[WOS]	Instruments & Instrumentation ; Physics
关键词[WOS]	DETERMINING THERMAL DIFFUSIVITY ; HEAT-LOSS ; TEMPERATURE ; ERRORS
收录类别	SCI
语种	英语
WOS记录号	WOS:000368594900059
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/8256]
专题	上海硅酸盐研究所_无机材料分析测试中心_期刊论文
作者单位	Chinese Acad Sci, Shanghai Inst Ceram, 1295 Dingxi, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Tao, Ye,Yang, Liping,Zhong, Qiu,et al. A modified evaluation method to reduce finite pulse time effects in flash diffusivity measurement[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2015,86(12):124902-1.
APA	Tao, Ye,Yang, Liping,Zhong, Qiu,Xu, Zijun,&Luo, Caiyun.(2015).A modified evaluation method to reduce finite pulse time effects in flash diffusivity measurement.REVIEW OF SCIENTIFIC INSTRUMENTS,86(12),124902-1.
MLA	Tao, Ye,et al."A modified evaluation method to reduce finite pulse time effects in flash diffusivity measurement".REVIEW OF SCIENTIFIC INSTRUMENTS 86.12(2015):124902-1.