Abstract Mass ply panels (MPP), a relatively new mass timber product, has been utilized in several construction projects as diaphragm and wall panels. Connection for MPP is crucial structural component that requires better understanding. This article presents an experimental investigation into elevated temperature exposure–driven property degradation of nailed connections, which important both ...

The design of interior cutouts in laminated composite panels is of great importance in aerospace, automobile and structural engineering. Based on the Tsai–Hill failure criterion of the first ply, this paper presents a newly developed Fixed (FG) Grid Evolutionary Structural Optimization (ESO) method to explore shape optimization of multiple cutouts in composite structures. Different design cases...

Methodology for cracking evolution simulation in 90-plies during cyclic loading is suggested this paper. It includes using low crack density (where the neighboring cracks do not interact with each other) data from quasi-static and testing (at one load) to determine parameters Weibull transverse failure stress distribution generalized fatigue. Then, Monte Carlo process used assign elements 90-pl...

We consider the recently introduced model of low ply graph drawing, a straight-line drawing in which the ply-disks of the vertices do not have many common overlaps, which results in a good distribution of the vertices in the plane. The ply-disk of a vertex is the disk centered at it whose radius is half the length of its longest incident edge. We focus our attention on low-ply drawings of trees...

A leading reason for the limited use of laminated composite materials in primary structural applications is that failure initiates in the ply oriented transverse to the direction of the applied load at a much lower strain than that which would cause the ultimate failure of the laminate. Previous studies indicate that transverse failure is manifested as either cavitation induced brittle failure ...

This work represents the first step towards application of machine learning techniques in prediction statistical design allowables composite laminates. Building on data generated analytically, four algorithms (XGBoost, Random Forests, Gaussian Processes and Artificial Neural Networks) are used to predict notched strength laminates their distribution, associated uncertainty related material prop...

In this paper, considering symmetric collapse mode for hybrid tubes, and using Tsai-Hill fracture criterion to take into account the off-axis strength of an orthotropic lamina, an analytical model is extended and an expression is derived for mean crushing load and fold lengths of circular hybrid tubes. In this model, the influences of the geometrical dimensions including diameter, thickness of ...

Carbon-fiber-reinforced epoxy-matrix composite (CFRP) laminates with thin plies have strong damage-resistance properties compared standard prepregs. The static and fatigue tensile fracture behavior of cross-ply CFRP should be further studied to establish the applicability thin-ply prepregs for industrial structures. In this study, cross-ply, high-strength polyacrylonitrile (PAN)-based carbon-fi...