The influence of burr formation and feed rate on the fatigue life of drilled titanium and aluminium alloys used in aircraft manufacture

Ali M. Abdelhafeez; Sein Leung Soo; David K. Aspinwall; Anthony Dowson; Dick Arnold

doi:10.1016/j.cirp.2018.03.013

The influence of burr formation and feed rate on the fatigue life of drilled titanium and aluminium alloys used in aircraft manufacture

Ali M. Abdelhafeez, Sein Leung Soo^*, David K. Aspinwall, Anthony Dowson, Dick Arnold

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

452 Downloads (Pure)

Abstract

Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti–6Al–4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti–6Al–4V and AA7010 samples by 69% and 283% respectively, but there was no significant effect on the AA2024 alloy. Fractography showed failure initiated near the exit burrs in Ti–6Al–4V and AA7010 specimens but not in the AA2024 workpieces. Correlation (R²) of fatigue notch factor against the sum of entrance and exit burr height was 0.68 and 0.79 for Ti–6Al–4V and AA7010 respectively, compared to 0.54 for AA2024.

Original language	English
Pages (from-to)	103-108
Number of pages	6
Journal	CIRP Annals
Volume	67
Issue number	1
Early online date	27 Apr 2018
DOIs	https://doi.org/10.1016/j.cirp.2018.03.013
Publication status	Published - 10 Jul 2018

Keywords

Deburring
Fatigue
Fracture analysis

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cirp.2018.03.013Licence: None: All rights reserved

Abdelhafeez_et_al_The_influence_of_burr_formation_CIRP_Annals_2018Accepted author manuscript, 9.01 MBLicence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

https://www.sciencedirect.com/science/article/pii/S0007850618300131Licence: None: All rights reserved

Cite this

@article{0cb95d11d3784d6596168e8c1b5cad1c,

title = "The influence of burr formation and feed rate on the fatigue life of drilled titanium and aluminium alloys used in aircraft manufacture",

abstract = "Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti–6Al–4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti–6Al–4V and AA7010 samples by 69% and 283% respectively, but there was no significant effect on the AA2024 alloy. Fractography showed failure initiated near the exit burrs in Ti–6Al–4V and AA7010 specimens but not in the AA2024 workpieces. Correlation (R2) of fatigue notch factor against the sum of entrance and exit burr height was 0.68 and 0.79 for Ti–6Al–4V and AA7010 respectively, compared to 0.54 for AA2024.",

keywords = "Deburring, Fatigue, Fracture analysis",

author = "Abdelhafeez, {Ali M.} and Soo, {Sein Leung} and Aspinwall, {David K.} and Anthony Dowson and Dick Arnold",

year = "2018",

month = jul,

day = "10",

doi = "10.1016/j.cirp.2018.03.013",

language = "English",

volume = "67",

pages = "103--108",

journal = "CIRP Annals",

issn = "0007-8506",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - The influence of burr formation and feed rate on the fatigue life of drilled titanium and aluminium alloys used in aircraft manufacture

AU - Abdelhafeez, Ali M.

AU - Soo, Sein Leung

AU - Aspinwall, David K.

AU - Dowson, Anthony

AU - Arnold, Dick

PY - 2018/7/10

Y1 - 2018/7/10

N2 - Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti–6Al–4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti–6Al–4V and AA7010 samples by 69% and 283% respectively, but there was no significant effect on the AA2024 alloy. Fractography showed failure initiated near the exit burrs in Ti–6Al–4V and AA7010 specimens but not in the AA2024 workpieces. Correlation (R2) of fatigue notch factor against the sum of entrance and exit burr height was 0.68 and 0.79 for Ti–6Al–4V and AA7010 respectively, compared to 0.54 for AA2024.

AB - Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti–6Al–4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti–6Al–4V and AA7010 samples by 69% and 283% respectively, but there was no significant effect on the AA2024 alloy. Fractography showed failure initiated near the exit burrs in Ti–6Al–4V and AA7010 specimens but not in the AA2024 workpieces. Correlation (R2) of fatigue notch factor against the sum of entrance and exit burr height was 0.68 and 0.79 for Ti–6Al–4V and AA7010 respectively, compared to 0.54 for AA2024.

KW - Deburring

KW - Fatigue

KW - Fracture analysis

UR - http://www.scopus.com/inward/record.url?scp=85046169920&partnerID=8YFLogxK

U2 - 10.1016/j.cirp.2018.03.013

DO - 10.1016/j.cirp.2018.03.013

M3 - Article

AN - SCOPUS:85046169920

SN - 0007-8506

VL - 67

SP - 103

EP - 108

JO - CIRP Annals

JF - CIRP Annals

IS - 1

ER -

The influence of burr formation and feed rate on the fatigue life of drilled titanium and aluminium alloys used in aircraft manufacture

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this