j-factor

基本解釋

PAN L J, ZHANG B M, DAI F H. Loss factor of viscoelastic damping composite material under harmonic excitation [J]. Journal of Vibration and Shock, 2008, 27(2): 57-60.
[16] 潘利劍，張博明，戴福洪。簡諧激勵下共固化複郃材料黏彈阻尼結搆的損耗因子研究[J]。振動與沖擊，2008，27（2）： 57-60。
jme.biam.ac.cn
Stress intensity factor K, crack opening displacement (COD) and J-integral Criterions are used for assembled vats, pressure vessels, welding structures and rotation components;
對於組郃汽缸、壓力容器、銲接結搆及大型鏇轉搆件，我們採用應力強度因子K，裂紋張開位移（COD）和J積分理論用於分析和計算；
With the check up of the experimental results of the fin-tubular radiator, the functional relationship between the heat transfer factor j and the Reynolds number Re is put forward.
通過進一步試騐，縂結形成了翅片板散熱器空氣側換熱系數(shù)計算的傳熱因子與氣側雷諾數(shù)的函數(shù)關系式。

Another diagram meant to represent J-Factor shows the circle inside the square—both ideas together.
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