Effects of irradiation on the fracture toughness of fbr structural materials

1987 ◽  
Vol 148 (2) ◽  
pp. 194-203 ◽  
Author(s):  
D.J. Michel ◽  
R.A. Gray
Keyword(s):  
Fracture Toughness ◽  
Structural Materials ◽  
Effects Of Irradiation On

Effect of Fiber Form and Volume Fraction on Fiber-Reinforced Biomimicked Composites

2012 ◽  
Author(s):  
Hussain Alghahtani ◽  
Seyed M. Allameh
Keyword(s):  
Fracture Toughness ◽  
Carbon Fibers ◽  
Volume Fraction ◽  
Structural Materials ◽  
Mechanical Tests ◽  
Fiber Reinforced ◽  
Structural Composites ◽  
Load Bearing ◽  
Short Forms ◽  
Four Point Bending

Biomimicked composites have shown to be superior to monolithic structural materials. However, they need reinforcement to replace conventional load-bearing structural composites. Carbon Fibers in long and short forms were used as reinforcement in biomimicked composites. Mechanical tests including four point bending were conducted to determine the effects of form and volume fraction of fibers on the fracture toughness of the biomimicked composites.

scholarly journals Nondestructive Techniques for Characterizing Mechanical Properties of Structural Materials — An Overview

1986 ◽  
Author(s):  
Alex Vary ◽  
Stanley J. Klima
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Nondestructive Evaluation ◽  
Elastic Moduli ◽  
Flaw Detection ◽  
Structural Materials ◽  
Tensile Shear ◽  
Quantitative Characterization ◽  
Nondestructive Techniques ◽  
Structural Parts

An overview of nondestructive evaluation (NDE) is presented to indicate the availability and application potentials of techniques for quantitative characterization the mechanical properties of structural materials. The purpose of this brief survey is to review NDE techniques that go beyond the usual emphasis on flaw detection and characterization. This survey covers current and emerging NDE techniques that can verify and monitor entrinsic properties (e.g., tensile, shear, and yield strengths; fracture toughness, hardness; ductility; elastic moduli) and underlying microstructural and morphological factors. Most of the techniques described are, at present, neither widely applied nor widely accepted in commerce and industry because they are still emerging from the laboratory. The limitations of the techniques may be overcome by advances in applications research and instrumentation technology and perhaps by accommodations for their use in the design of structural parts.

scholarly journals A New Approach to Evaluate Fracture Toughness of Structural Materials

2003 ◽  
Author(s):  
J. A. Wang ◽  
K. C. Liu
Keyword(s):  
Fracture Toughness ◽  
Three Dimensional ◽  
Torsion Test ◽  
Computer Code ◽  
Structural Materials ◽  
New Approach ◽  
Dimensional Finite Element ◽  
Toughness Testing ◽  
Materials Used ◽  
Three Dimensional Finite Element

A new method, designated as Spiral Notch Torsion Test (SNTT), is developed recently to measure the intrinsic fracture toughness (KIC) of structural materials. The SNTT overcomes many of the limitations inherent in traditional techniques and makes it possible to standardize fracture toughness testing. It is uniquely suitable for testing a wide variety of materials used extensively in pressure vessel and piping structural components and weldments, including others such as ceramics, their composites, and concrete. The SNTT system operates by applying pure torsion to uniform cylindrical specimens with a notch line that spirals around the specimen at a 45° pitch. The KIC values are obtained with the aid of a three-dimensional finite-element computer code, TOR3D-KIC, developed at ORNL.

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