scholarly journals Modified Constitutive Relation Error for field identification : theoretical and experimental assessments on fiber orientation identification in a composite material

2021 ◽  
Author(s):  
Renaud Ferrier ◽  
Aldo Cocchi ◽  
Christian Hochard
Keyword(s):  
Composite Material ◽  
Constitutive Relation ◽  
Fiber Orientation ◽  
Field Identification ◽  
Constitutive Relation Error

Effect of Fiber Orientation on the Tensile Strength in Fiber-Reinforced Polymeric Composite Materials

2005 ◽  
Vol 297-300 ◽  
pp. 2897-2902 ◽  
Author(s):  
Jin Woo Kim ◽  
Jung Ju Lee ◽  
Dong Gi Lee
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Fiber Orientation ◽  
Polymeric Composite ◽  
Orientation Distribution ◽  
Fiber Content ◽  
Fiber Reinforced ◽  
Composite Sheet ◽  
Content Ratio ◽  
Fiber Orientation Distribution

The study for strength calculation of one way fiber-reinforced composites and the study measuring precisely fiber orientation distribution were presented. However, because the DB that can predict mechanical properties of composite material and fiber orientation distribution by the fiber content ratio was not constructed, we need the systematic study for that. Therefore, in this study, we investigated what effect the fiber content ratio and fiber orientation distribution have on the strength of composite sheet after making fiber reinforced polymeric composite sheet by changing fiber orientation distribution with the fiber content ratio. The result of this study will become a guide to design data of the most suitable parts design or fiber reinforced polymeric composite sheet that uses the fiber reinforced polymeric composite sheet in industry spot, because it was conducted in terms of developing products. We studied the effect the fiber orientation distribution has on tensile strength of fiber reinforced polymeric composite material and achieved this results below. We can say that the increasing range of the value of fiber reinforced polymeric composite’s tensile strength in the direction of fiber orientation is getting wider as the fiber content ratio increases. It shows that the value of fiber reinforced polymeric composite’s tensile strength in the direction of fiber orientation 90° is similar with the value of polypropylene’s intensity when fiber orientation function is J= 0.7, regardless of the fiber content ratio. Tensile strength of fiber reinforced polymeric composite is affected by the fiber orientation distribution more than by the fiber content ratio.

Extended constitutive relation error‐based approach: The role of mass in damage detection

2019 ◽  
Vol 26 (5) ◽  
pp. e2318 ◽  
Author(s):  
Xiaoyu Hu ◽  
Evan Chodora ◽  
Saurabh Prabhu ◽  
Sez Atamturktur
Keyword(s):  
Damage Detection ◽  
Constitutive Relation ◽  
Constitutive Relation Error

Wrinkling Behavior of a Woven Thermoplastic Composite Material

2017 ◽  
Vol 893 ◽  
pp. 26-30
Author(s):  
Lu Chen ◽  
Shankar Kalyanasundaram
Keyword(s):  
Composite Material ◽  
Fiber Orientation ◽  
Abrupt Change ◽  
Strain Increment ◽  
Thermoplastic Composite ◽  
Material System ◽  
Woven Composite ◽  
Composite Sheet ◽  
Abrupt Changes ◽  
Increment Ratio

This article examines the prediction of wrinkling initiation in self-reinforced thermoplastic composite materials for potential application in rapid forming of this class of materials. Whilst most of recent researches concentrate on examining metallic wrinkling behavior, this article aims to introduce a wrinkling indicator for composite sheet. The material system involved in the study is a self-reinforced polypropylene woven composite with a fiber orientation of 0°/90° along the warp and weft directions. Square specimens were stretched uniaxially along diagonal direction until the onset of wrinkling. It is observed that when the wrinkling occurs, strain increment ratio exhibits an abrupt change. This fundamental observation leads to the prediction of onset of wrinkling by using abrupt changes in strain increment ratio as a metric.

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