Effect of nitriding treatment on fatigue life for free piston linear engine component using frequency response method: A finite element approach

Mustafizur M. Rahman, Ahmad Kamal Ariffin Mohd Ihsan, Shahrum Abdullah, A. B. Rosli

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Low weight and long lifetime are necessary requirements for automobiles to significantly reduce CO2 emission and environmental burdens in their use. Aluminum alloys are one of the most promising materials selections for automobiles parts and electrical components to reduce their weight and to increase their specific strength. This paper presents the role of nitriding on the fatigue life of the vibrating cylinder block for a new two-stroke free piston engine using variable amplitude loading conditions. The finite element modeling and analysis have been performed utilising a computer aided design and a finite element analysis codes respectively. In addition, the fatigue life prediction was carried out using finite element based fatigue analysis code. The material AA6061-T6 is considered in this study. The narrow band frequency response approach was applied to predict the fatigue life of cylinder block using different load histories. Based on the finite element results, it is observed that there is a significant variation between the nitriding treatment and untreated cylinder block of free piston engine. The obtained results indicate that the nitrided treatment produces longest life for all loading conditions. Therefore, the nitriding process is one of the promising surface treatments for aluminum alloy parts to increase the fatigue life of the linear engine cylinder block.

Original languageEnglish
Pages (from-to)197-209
Number of pages13
JournalSDHM Structural Durability and Health Monitoring
Volume3
Issue number4
Publication statusPublished - Dec 2007

Fingerprint

Cylinder blocks
Nitriding
Pistons
Frequency response
Fatigue of materials
Engines
Free piston engines
Automobiles
Aluminum alloys
Engine cylinders
Surface treatment
Computer aided design
Finite element method

Keywords

  • Cylinder block
  • Fatigue life
  • Finite element method
  • Free piston engine
  • Narrow band frequency response
  • Nitriding

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

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abstract = "Low weight and long lifetime are necessary requirements for automobiles to significantly reduce CO2 emission and environmental burdens in their use. Aluminum alloys are one of the most promising materials selections for automobiles parts and electrical components to reduce their weight and to increase their specific strength. This paper presents the role of nitriding on the fatigue life of the vibrating cylinder block for a new two-stroke free piston engine using variable amplitude loading conditions. The finite element modeling and analysis have been performed utilising a computer aided design and a finite element analysis codes respectively. In addition, the fatigue life prediction was carried out using finite element based fatigue analysis code. The material AA6061-T6 is considered in this study. The narrow band frequency response approach was applied to predict the fatigue life of cylinder block using different load histories. Based on the finite element results, it is observed that there is a significant variation between the nitriding treatment and untreated cylinder block of free piston engine. The obtained results indicate that the nitrided treatment produces longest life for all loading conditions. Therefore, the nitriding process is one of the promising surface treatments for aluminum alloy parts to increase the fatigue life of the linear engine cylinder block.",
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AU - Abdullah, Shahrum

AU - Rosli, A. B.

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AB - Low weight and long lifetime are necessary requirements for automobiles to significantly reduce CO2 emission and environmental burdens in their use. Aluminum alloys are one of the most promising materials selections for automobiles parts and electrical components to reduce their weight and to increase their specific strength. This paper presents the role of nitriding on the fatigue life of the vibrating cylinder block for a new two-stroke free piston engine using variable amplitude loading conditions. The finite element modeling and analysis have been performed utilising a computer aided design and a finite element analysis codes respectively. In addition, the fatigue life prediction was carried out using finite element based fatigue analysis code. The material AA6061-T6 is considered in this study. The narrow band frequency response approach was applied to predict the fatigue life of cylinder block using different load histories. Based on the finite element results, it is observed that there is a significant variation between the nitriding treatment and untreated cylinder block of free piston engine. The obtained results indicate that the nitrided treatment produces longest life for all loading conditions. Therefore, the nitriding process is one of the promising surface treatments for aluminum alloy parts to increase the fatigue life of the linear engine cylinder block.

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KW - Nitriding

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