Fatigue Behavior and Modeling for Thermoplastics

Rakish Shrestha; Jutima Simsiriwong; Marcos Lugo; Nima Shamsaei

doi:10.2514/6.2015-0895

Fatigue Behavior and Modeling for Thermoplastics

Rakish Shrestha, Jutima Simsiriwong, Marcos Lugo, Nima Shamsaei

Mississippi State University

Research output: Chapter or Contribution to Book › Chapter › peer-review

Abstract

In this study, the cyclic behavior and the microstructure under cyclic loading of a semi-crystalline thermoplastic polyether ether ketone (PEEK) are investigated. Macroscopic strain life experiments under uniaxial loading condition were conducted at strain amplitudes ranging from 0.02 mm/mm to 0.04 mm/mm and at ambient temperature. Scanning electron microscopy (SEM) analysis was performed on fatigue specimens to examine crack incubation sites and microstructural inclusions responsible for incubating fatigue cracks. Other microstructural inclusion properties including inclusion type (pore or particle), inclusion size, and nearest neighbor distance of inclusions were also obtained. Based on the experimental results, the strain-based fatigue model was employed to obtain strain-life fatigue properties and z-N fatigue curves of PEEK.

Original language	American English
Title of host publication	Proceedings of the 56TH AIAA/ASCE/AHS/ASC STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CONFERENCE
DOIs	https://doi.org/10.2514/6.2015-0895
State	Published - Jan 2 2015
Externally published	Yes
Event	56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference - Kissimmee, United States Duration: Jan 5 2015 → Jan 9 2015

Conference

Conference	56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Country/Territory	United States
City	Kissimmee
Period	1/5/15 → 1/9/15

Keywords

fatigue behavior
Thermoplastic
Polyether Ether Ketone
Scanning Electron Microscope
Fatigue Cracking
Microstructure
Elastic and Plastic Strain
Compression Tests
Crack Propagation
Fatigue Strength
Fatigue Failure

Disciplines

Materials Science and Engineering

Access to Document

10.2514/6.2015-0895License: Unspecified

Cite this

Shrestha, R, Simsiriwong, J, Lugo, M & Shamsaei, N 2015, Fatigue Behavior and Modeling for Thermoplastics. in Proceedings of the 56TH AIAA/ASCE/AHS/ASC STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CONFERENCE. 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Kissimmee, Florida, United States, 1/5/15. https://doi.org/10.2514/6.2015-0895

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title = "Fatigue Behavior and Modeling for Thermoplastics",

abstract = "In this study, the cyclic behavior and the microstructure under cyclic loading of a semi-crystalline thermoplastic polyether ether ketone (PEEK) are investigated. Macroscopic strain life experiments under uniaxial loading condition were conducted at strain amplitudes ranging from 0.02 mm/mm to 0.04 mm/mm and at ambient temperature. Scanning electron microscopy (SEM) analysis was performed on fatigue specimens to examine crack incubation sites and microstructural inclusions responsible for incubating fatigue cracks. Other microstructural inclusion properties including inclusion type (pore or particle), inclusion size, and nearest neighbor distance of inclusions were also obtained. Based on the experimental results, the strain-based fatigue model was employed to obtain strain-life fatigue properties and z-N fatigue curves of PEEK.",

keywords = "fatigue behavior, Thermoplastic, Polyether Ether Ketone, Scanning Electron Microscope, Fatigue Cracking, Microstructure, Elastic and Plastic Strain, Compression Tests, Crack Propagation, Fatigue Strength, Fatigue Failure",

author = "Rakish Shrestha and Jutima Simsiriwong and Marcos Lugo and Nima Shamsaei",

note = "Ross Meyer, Jutima Simsiriwong, (2015) Marcos Lugo and Nima Shamsaei. {"}Fatigue Behavior and Modeling for Thermoplastics,{"} in the Proceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference at held on 5-9 January 2015 in Kissimmee, Florida.; 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference ; Conference date: 05-01-2015 Through 09-01-2015",

year = "2015",

month = jan,

day = "2",

doi = "10.2514/6.2015-0895",

language = "American English",

isbn = "9781624103421",

booktitle = "Proceedings of the 56TH AIAA/ASCE/AHS/ASC STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CONFERENCE",

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TY - CHAP

T1 - Fatigue Behavior and Modeling for Thermoplastics

AU - Shrestha, Rakish

AU - Simsiriwong, Jutima

AU - Lugo, Marcos

AU - Shamsaei, Nima

N1 - Ross Meyer, Jutima Simsiriwong, (2015) Marcos Lugo and Nima Shamsaei. "Fatigue Behavior and Modeling for Thermoplastics," in the Proceedings of the 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference at held on 5-9 January 2015 in Kissimmee, Florida.

PY - 2015/1/2

Y1 - 2015/1/2

N2 - In this study, the cyclic behavior and the microstructure under cyclic loading of a semi-crystalline thermoplastic polyether ether ketone (PEEK) are investigated. Macroscopic strain life experiments under uniaxial loading condition were conducted at strain amplitudes ranging from 0.02 mm/mm to 0.04 mm/mm and at ambient temperature. Scanning electron microscopy (SEM) analysis was performed on fatigue specimens to examine crack incubation sites and microstructural inclusions responsible for incubating fatigue cracks. Other microstructural inclusion properties including inclusion type (pore or particle), inclusion size, and nearest neighbor distance of inclusions were also obtained. Based on the experimental results, the strain-based fatigue model was employed to obtain strain-life fatigue properties and z-N fatigue curves of PEEK.

AB - In this study, the cyclic behavior and the microstructure under cyclic loading of a semi-crystalline thermoplastic polyether ether ketone (PEEK) are investigated. Macroscopic strain life experiments under uniaxial loading condition were conducted at strain amplitudes ranging from 0.02 mm/mm to 0.04 mm/mm and at ambient temperature. Scanning electron microscopy (SEM) analysis was performed on fatigue specimens to examine crack incubation sites and microstructural inclusions responsible for incubating fatigue cracks. Other microstructural inclusion properties including inclusion type (pore or particle), inclusion size, and nearest neighbor distance of inclusions were also obtained. Based on the experimental results, the strain-based fatigue model was employed to obtain strain-life fatigue properties and z-N fatigue curves of PEEK.

KW - fatigue behavior

KW - Thermoplastic

KW - Polyether Ether Ketone

KW - Scanning Electron Microscope

KW - Fatigue Cracking

KW - Microstructure

KW - Elastic and Plastic Strain

KW - Compression Tests

KW - Crack Propagation

KW - Fatigue Strength

KW - Fatigue Failure

UR - http://arc.aiaa.org/doi/10.2514/6.2015-0895

U2 - 10.2514/6.2015-0895

DO - 10.2514/6.2015-0895

M3 - Chapter

SN - 9781624103421

BT - Proceedings of the 56TH AIAA/ASCE/AHS/ASC STRUCTURES, STRUCTURAL DYNAMICS, AND MATERIALS CONFERENCE

T2 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Y2 - 5 January 2015 through 9 January 2015

ER -

Fatigue Behavior and Modeling for Thermoplastics

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