Fatigue Strength, Stress, and Vibration Analysis

2016 ◽  
pp. 215-256
Keyword(s):  
Fatigue Strength ◽  
Vibration Analysis

Investigations of the mechanical properties on different print orientations in SLA 3D printed resin

2020 ◽  
Vol 234 (11) ◽  
pp. 2279-2293 ◽  
Author(s):  
JS Saini ◽  
Luke Dowling ◽  
John Kennedy ◽  
Daniel Trimble
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Fatigue Strength ◽  
Material Properties ◽  
Vibration Analysis ◽  
Compressive Load ◽  
Mechanical Tests ◽  
Impact Fatigue ◽  
Number Of Factors ◽  
3D Printed

3D printing has been recognized as the future manufacturing technique by different industries. The properties of products manufactured using this technique depend upon large number of factors, with print orientation being one among the most important factors. Currently, there is no standard for the build orientation of the printed component. To date, the analysis of material properties is conducted by testing specimens printed in different orientations. The present work explores the effect of layer orientations on the different mechanical properties of an SLA manufactured polymer material. Five different orientations, i.e. 0°, 22.5°, 45°, 67.5° and 90° were used to print the specimens for the analysis of mechanical properties of the material. Tensile, compression, flexural, impact, fatigue and vibration analysis are the different mechanical tests that were conducted as per their respective standards. It was found that the print orientation plays a significant role in the behaviour of the respective mechanical property. The maximum tensile and compressive load are being taken by the specimens printed at an angle of 22.5° and 67.5°, respectively. The specimen printed at 67.5° orientation again have highest flexural strength, whereas the specimen printed at 0° have higher impact and fatigue strength.

STOCHASTIC CALCULATION OF LIFETIME PREDICTION FOR COMPONENTS IN METAL STRUCTURES DUE TO THE GROWTH OF MICRODEFECTS

2020 ◽  
Vol 4 (97) ◽  
pp. 69-76
Author(s):  
IGOR N. SILVERSTOV
Keyword(s):  
Fatigue Strength ◽  
Fracture Mechanics ◽  
Stochastic Approach ◽  
Fatigue Curve ◽  
Probability Of Failure ◽  
Lifetime Prediction ◽  
Statistical Distributions ◽  
Metal Structures

A stochastic approach has been developed to evaluate fatigue strength using elements of the fracture mechanics. The article presents a method for determining the initial parameters of statistical distributions. It also considers the method for constructing a fatigue curve for a component of any size and configuration with any given probability of failure.

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