scholarly journals Design and Construction of Device for Rubber Material Fatigue Test

2021 ◽  
Vol 1094 (1) ◽  
pp. 012173
Author(s):  
Saddam K Al-Raheem ◽  
Muhsin J Jweeg ◽  
Abdul kareem F Hassan
Keyword(s):  
Fatigue Test ◽  
Rubber Material ◽  
Material Fatigue ◽  
Design And Construction

scholarly journals PERANCANGAN ULANG ALAT UJI FATIGUE ROTARY BENDING

POROS ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 42
Author(s):  
Clementinus Benny Agung Pambayu ◽  
Agustinus Purna Irawan ◽  
Didi Widya Utama
Keyword(s):  
Yield Strength ◽  
Fatigue Test ◽  
Design Tool ◽  
Dynamic Loads ◽  
Test Equipment ◽  
Digital Readout ◽  
Material Fatigue ◽  
Long Time

Abstract: Fatigue is a form of failure that occurred in the structure due to fluctuating dynamic loads that occur below the yield strength for a long time and repeatedly. Determines the required material fatigue test equipment fatigue. Fatigue test equipment is designed with rotary bending systems. Re-design tool that was originally done to digitize readings manually replaced with a digital readout. Digitization include the addition of pulse digital meter, digital meter counter and the system auto shutdown. The addition of a digital readout to facilitate the conduct of research and testing of materials. 

A Probabilistic Approach for Determining the Component’s Dimension Under Fatigue Loadings

2009 ◽  
Author(s):  
Xiaobin Le ◽  
Jahan Rasty
Keyword(s):  
Fatigue Test ◽  
Test Data ◽  
Probabilistic Approach ◽  
Random Variables ◽  
Random Variable ◽  
Design Equation ◽  
Probabilistic Design ◽  
Material Fatigue ◽  
Stress Levels ◽  
Design Scenario

Due to inherent scatters in fatigue test data, the P-S-N curves are normally used to describe material fatigue behaviors. For probabilistic component’s design under fatigue loadings, the component’s dimension should be treated as a random variable because every dimension is certainly with a dimension tolerance. In this design scenario, it is difficult to determine the component’s dimension under fatigue loadings by using the P-S-N curves because stress levels are unknown and random variables. In this paper, a probabilistic approach is presented to build a generic probabilistic design equation which is governed by random variables related to material fatigue behaviors, component conditions and fatigue loadings. The generic probabilistic design equation can be used to determine component’s dimension with a given reliability. One example is presented for explaining the approach in details.

A New Method to Determine the Fatigue Limit and the p-S-N Curve

2012 ◽  
Vol 248 ◽  
pp. 256-261 ◽  
Author(s):  
Jian Ming Zhai ◽  
Xiao Yang Li
Keyword(s):  
Density Distribution ◽  
Probability Density ◽  
Fatigue Limit ◽  
Fatigue Test ◽  
Conditional Probability ◽  
Mechanical Design ◽  
New Method ◽  
Conditional Probability Density ◽  
Probability Density Distribution ◽  
Material Fatigue

The performances of material fatigue can be illustrated by the S-N curve, the p-S-N curve and the fatigue limit, which are very important to engineering and the mechanical design. Recently, the author proposed a new method to determine a conditional probability density distribution surface(CPDDS) of the material, and the surface can reflects most properties of the material’s fatigue. Methods to obtain the theoretical fatigue limit and the p-S-N curve are introduced in this paper on the basis of previous study. The methods are applied on the fatigue test data of C45 steel, and the p-S-N curves that obtained by various methods are compared in this paper.

scholarly journals Innovative Adaptive Control of Material Fatigue Test Machines Using an MCS Controller

2018 ◽  
Vol 1 (1) ◽  
pp. 287-294
Author(s):  
Adam Heyduk ◽  
Krystian Kalinowski ◽  
Roman Kaula ◽  
Joachim Pielot
Keyword(s):  
Fatigue Test ◽  
Feedback Loop ◽  
Fatigue Testing ◽  
Reference Signal ◽  
Nonlinear Behavior ◽  
Fatigue Tests ◽  
Significant Deterioration ◽  
New Approach ◽  
Control Quality ◽  
Material Fatigue

Abstract The paper presents some issues related to the control of fatigue test machines based on W(t) parameter taking into account the simultaneous interaction of stress and strain. This parameter is defined as a product of these values. Such a research method represents a new approach in fatigue testing with an innovative control system. Because of the W(t) function characteristics, the system presents nonlinear behavior and there is a significant deterioration of the control quality and the controlled signal significantly differs from the reference signal waveform. This problem can be solved by introducing a nonlinear block into the feedback loop. Fatigue tests have been carried out for sinusoidal and randomized reference signal waveforms. These tests have proved that the controlled signal follows reference values with an appropriate control quality.

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