in this paper, we focus on a continuously deteriorating critical equipment which its failure cannot be measured by cost criterion. for these types of systems like military systems, nuclear systems, etc it is extremely important to avoid failure during the actual operation of the system. in this paper we propose an approach which constrains failure probability to a pre-specified value. this valu...

Purpose. The aim of this paper is to develop a numerical model investigate the stability Angouran underground mine batching room, in which appropriate support systems are selected, designed, and compared choose most optimal case. Methods. Stability analysis carried out by critical shear strain criterion using finite element method (FEM). effect system on room has been determined for two types c...

A crow search algorithm (CSA) was applied to perform the optimization of a running blade prosthetics (RBP) made composite materials like carbon fibre layers and cores acrylonitrile butadiene styrene (ABS). Optimization aims increase RBP displacement limited by Tsai-Wu failure criterion. Both criterion are predicted using artificial neural networks (ANN) trained with database constructed from fi...

Steady-state creep response in a rotating disc made of Al-SiC particle composite having linearly varying thickness has been carried out using isotropic/anisotropic Hoffman yield criterion and results are comparedwith those using vonMises yield criterion/Hill’s criterion ignoring difference in yield stresses. The steady-state creep behavior has been described by Sherby’s creep law. The material ...

The Addiction Severity Index--Multimedia Version (ASI-MV) is a CD-ROM-based simulation of the interviewer-administered Addiction Severity Index (ASI). Clients in treatment (N = 202) self-administered the ASI-MV to examine the test-retest reliability, criterion validity, and convergent-discriminant validity of the ASI-MV. Excellent test-retest reliability was observed for composite scores and se...

• An efficient and robust strength optimization method for novel composite laminates. A global Tsai-Wu oriented failure index is built to aggregate measurement. lamination-parameter-based approximation, ensuring smooth convergence, derived. Benchmark tests confirm the superiority of approach local-based one. computationally-efficient tailoring laminates using lamination parameters developed. Th...

The experimental testing and analysis of strength deformation characteristics hydrate reservoirs is an integral part natural gas exploitation. However, studies so far have failed to deeply explore samples from the South China Sea. Especially, there a lack simple applicable method estimate their mechanical behaviors. Thus, based on test data, improved Duncan-Chang model established in this paper...

The work aimed to assess the failure progress in a glass fiber-reinforced polymer laminate with a 3D-woven and (as a comparison) plain-woven reinforcement, during static bending, using acoustic emission signals. The innovative method of the separation of the signal coming from the fiber fracture and the one coming from the matrix fracture with the use of the acoustic event's energy as a criteri...