Benchmark measurement of residual stresses in a 7449 aluminium alloy using deep-hole and incremental centre-hole drilling methods

Hossain, Sayeed; Truman, Christopher E; Smith, David J.

doi:10.1007/978-1-4614-0225-1_9

Cited by 4 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observations presented here do suggest the PQD should be reduced as far as practicably possible. However, measurement techniques with lower experimental uncertainties such as deep hole drilling 36 , layer removal, 37 crack compliance 9,38 or contour 39 will be required to determine if PQDs is truly effective.…”

Section: Discussionmentioning

confidence: 99%

Effect of post-quench delay on stress relieving by cold compression for the aluminium alloy 7050

Robinson

Tiernan

Kelleher

2015

Materials Science and Technology

View full text Add to dashboard Cite

The objective of this investigation was to determine the influence of post-quench delays on residual stresses in the heat treatable aluminium alloy 7050, when stress relieved by cold compression. Immersion quenching after solution heat treatment introduces high magnitude residual stresses. These residual stresses can be relieved by the controlled application of post-quench plastic deformation. The effect of a delay between quenching and the application of cold compression has been investigated. During this delay, the aluminium alloy undergoes natural aging, which changes the workhardening behaviour of the alloy during subsequent cold compression. Neutron and X-ray diffraction were used to characterise the residual stresses. It was found that reducing the post-quench delay resulted in lower magnitude residual stresses after cold compression.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of post-quench delay on stress relieving by cold compression for the aluminium alloy 7050

Robinson

Tiernan

Kelleher

2015

Materials Science and Technology

View full text Add to dashboard Cite

show abstract

“…The difficulty of how to measure them accurately then arises. Layer removal , incremental centre hole drilling , deep‐hole drilling , crack compliance , contour , X‐ray diffraction and neutron diffraction have all been used to assess the efficacy of plastic deformation on residual stress reduction. Most, if not all, conclude that residual stresses are reduced into the ±30‐MPa range by the application of >1.5% plastic strain.…”

Section: Residual Stress Relaxation By Mechanical Meansmentioning

confidence: 99%

50th Anniversary Article: The Origin and Management of Residual Stress in Heat‐treatable Aluminium Alloys

Robinson

Tanner

Truman

2014

Strain

View full text Add to dashboard Cite

The presence of macroscopic residual stresses in heat-treatable aluminium alloys can give rise to machining distortion, dimensional instability and increased susceptibility to in-service fatigue and stress corrosion cracking. This paper presents and reviews details about the residual stress magnitudes and distributions introduced into wrought aluminium alloys by the thermal operations associated with heat treatment. Experimental measurement data and the results of finite element analysis are presented and discussed. The available technologies by which residual stresses in aluminium alloys can be relieved are reviewed. The limitations of these techniques are described, and recommendations are made as to selecting the most appropriate technique to manage residual stresses. Opportunities for the future optimisation of these techniques are also presented.

show abstract

“…The DHD method is faster compared to IHD but does not provide adequate insight to through-thickness residual stresses in a component, because it only provides an average residual stress over the entire depth. Thus, the IHD method is widely used compared to DHD [ 85 ]. Ghasemi, Taheri-Behrooz and Shokrieh [ 86 ] predicted non-uniform residual stresses within E-glass/Epoxy laminate composites using the incremental hole-drilling method, and the result obtained revealed that the strain at the surface decreased considerably compared to the strain released in the depth when the depth of the hole is increased.…”

Section: Fibre-prestressing Techniquementioning

confidence: 99%

A Review of Prestressed Fibre-Reinforced Polymer Matrix Composites

Ogunleye

Rusnáková

2021

Polymers

View full text Add to dashboard Cite

This review examines various studies on reducing tensile stresses generated in a polymer matrix composite without increasing the mass or dimension of the material. The sources of residual stresses and their impacts on the developed composite were identified, and the different techniques used in limiting residual stresses were also discussed. Furthermore, the review elaborates on fibre-prestressing techniques based on elastically (EPPMC) and viscoelastically (VPPMC) prestressed polymer matrix composites, while advantages and limitations associated with EPPMC and VPPMC methods are also explained. The report shows that tensile residual stresses are induced in a polymer matrix composite during production as a result of unequal expansion, moisture absorption and chemical shrinkage; their manifestations have detrimental effects on the mechanical properties of the polymer composite. Both EPPMC and VPPMC have great influence in reducing residual stresses in the polymer matrix and thereby improving the mechanical properties of composite materials. The reports from this study provide some basis for selecting a suitable technique for prestressing as well as measuring residual stresses in composite materials.

show abstract

Benchmark measurement of residual stresses in a 7449 aluminium alloy using deep-hole and incremental centre-hole drilling methods

Cited by 4 publications

References 11 publications

Effect of post-quench delay on stress relieving by cold compression for the aluminium alloy 7050

Effect of post-quench delay on stress relieving by cold compression for the aluminium alloy 7050

50th Anniversary Article: The Origin and Management of Residual Stress in Heat‐treatable Aluminium Alloys

A Review of Prestressed Fibre-Reinforced Polymer Matrix Composites

Contact Info

Product

Resources

About