5) weibull modulus 韦氏模数 1. In the paper,experimental data was processed by weibull theory andweibull moduluswere calculated. 本文采用韦氏理论及方法处理实验数据,计算出韦氏模数 m,并阐述 m 与力学性能之间的关系。 6) weibull 韦氏(Weibull) ...
1) Weibull equation Weibull方程2) Weibull process Weibull过程 1. Three-parameter Weibull process of using position element and point estimation; 引入位置参数的三参数Weibull过程及其点估计方法 2. Statistical inference of the achieved MTBF for Weibull process; Weibull过程能达到的MTBF的统计推断 3. ...
In this work a systematic approach using the Monte Carlo method has been taken to determining the optimal probability estimators for unbiased estimation ofm(mean, median and mode) using the general equationF=(i−a)/(N+b)whilst simultaneously minimising the coefficient of variation for each of ...
where λ is a scaling parameter, and n is the shape parameter, often referred to as the Weibull modulus. The parameter β is the threshold of the distribution. For example, n=1 gives an exponential distribution. When n>3.5, the distribution can be used to approximate a Gaussian distribution...
In materials science, the Weibull distribution is used to describe the failure strength of samples that are macroscopically identical but fail at different stresses due to a random size distribution of weaknesses24. In this context,kis often termed the Weibull modulus. For largek, the weaknesses ar...
The equation gives the failure probability of a component in terms of the unit strength and variability (characterised by the Weibull modulus) of the material, the size and shape of the component and the type and magnitude of the loads acting on it. The shape of the component and the type...
Using Weibull's two-parameter equation, the probability of failure P at stress σ represented by [1] P = 1 - exp [-(σ/σ_0)~m] (1) where m and σ_0 are the Weibull modulus and scale parameter, respectively. The most widely used method to estimate the two parameters from a set...
Using Kand probability of fracture P', ln ln[1/(1 P)] – ln Kgraph was drawn based on the Weibull distribution equation. Consequently, Weibull modulus, m' and scale parameter, K' were determined and compared with each other.doi:10.1515/amm-2017-0294Ertu?, B....
Fig. 1. Example of a Weibull distribution with σ0 = 4000 MPa, showing how the scatter in fibre strength increases when the Weibull modulus decreases. In the initial distribution proposed by Weibull himself [5], a lower limit σu for the fibre strength was included: (2)P(σf)=1-exp-...
Freeze–thaw condition has a greater influence on the Cold–in place recycling (CIR) asphalt mixes, the post–freeze–thaw asphalt mixture's dynamic modulus reduced by 11–42 %, the fracture energy dropped by 6 %, and the application of CIR technology enhanced the performance of the ...