J. M. O’Sullivan
University of Hertfordshire
CombustionEngineeringAgglomerateFatigue limitStampingComposite materialWeibull distributionLap jointMetallurgyMaterials scienceJoint (geology)Scanning electron microscopeTitanium carbideSinteringAluminium alloyAlloyLubricantCrack initiationFatigue testingSolid surfaceFracture (geology)CarbonTitaniumAluminiumCarbideRivetNucleationFailure mode and effects analysisStructural engineeringPowder metallurgyShear (sheet metal)FrettingPressing
6Publications
4H-index
155Citations
Publications 6
Newest
#1Li Han (Warw.: University of Warwick)H-Index: 17
#2Andreas Chrysanthou (University of Hertfordshire)H-Index: 22
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 3 authors...
The fretting behaviour of self-piercing riveted aluminium alloy joints with three different interfacial conditions has been investigated in this study. The fatigue life of the joints was observed to be dependent on the fretting behaviour under different interfacial conditions. The presence of a wax-based solid surface lubricant on the surface of the aluminium alloy sheet could delay the onset of fretting damage leading to longer fatigue life. Inserting PTFE tape at the interface between the two ...
53 CitationsSource
#1Li Han (Warw.: University of Warwick)H-Index: 17
#2Ken Young (Warw.: University of Warwick)H-Index: 3
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 4 authors...
Self-piercing riveting as an alternative joining method to spot-welding has attracted considerable interest from the automotive industry and has been widely used in aluminium intensive vehicles. Pressing and stamping are important processes in automotive production and result in additional straining on the vehicle body sheet material. It is therefore important to have knowledge of the effect of sheet pre-straining on the quality of the self-piercing riveted joints and on the mechanical behaviour...
32 CitationsSource
#1Li Han (Warw.: University of Warwick)H-Index: 17
#2Kathryn Rose Young (Warw.: University of Warwick)H-Index: 6
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 5 authors...
Self-piercing riveting, as an alternative joining method to spot-welding, has attracted considerable interest from the automotive industry and has been widely used in aluminium intensive vehicles. One of the important factors that need to be considered is the effect of cyclic loading in service, leading to possible fatigue failure. The previous work reported in the public domain on the behaviour of self-piercing rivets has mainly focused on static tests. The work which is reported in this paper ...
Source
#1Yong Chen (University of Hertfordshire)H-Index: 14
#2Li Han (University of Hertfordshire)H-Index: 17
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 4 authors...
Abstract Fretting wear in aluminium alloy AA5754 joined by self-pierce riveting (SPR), a relatively new fastening technique increasingly used in vehicle structures, has been investigated in this paper. Surface damages have been induced when a joint experienced a sinusoidal cyclic tension–tension load. Various degradation zones have been characterised in the contact surfaces between the aluminium sheets, as well as the rivet and the locked sheet. Subsequent examination of the fretting scars at th...
50 CitationsSource
#1Andreas Chrysanthou (University of Hertfordshire)H-Index: 22
#2Yong Chen (University of Hertfordshire)H-Index: 14
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 4 authors...
Titanium-matrix composites containing up to 50 wt% TiC particles were prepared by combustion synthesis using elemental powders. The products were subsequently sintered at 1160°C for various periods of time. SEM and X-ray diffraction were used to assess the changes that took place during the two stages of processing. Products of combustion synthesis containing in excess of 25%TiC contained large cracks as well as agglomerates of carbide particles that were undesirable from the point of view of re...
4 CitationsSource
#1Li Han (University of Hertfordshire)H-Index: 17
#2Yong Chen (University of Hertfordshire)H-Index: 14
Last. J. M. O’Sullivan (University of Hertfordshire)H-Index: 4
view all 4 authors...
Self-pierce riveting is a relatively new joining technique that is attracting interest for various engineering applications. The process does not require a pre-drilled hole and this can eliminate the alignment problem encountered by conventional mechanical fastening. A range of materials covering similar or dissimilar materials can be joined with multiple layers by such means. The study showed that the strength and fatigue behaviour of self-piercing rivets is affected by selecting a suitable riv...
18 CitationsSource