Imperial College London

John P. Dear MA PhD CEng FIMechE CPhys FInstP

Faculty of EngineeringDepartment of Mechanical Engineering

Professor of Mechanical Engineering
 
 
 
//

Contact

 

+44 (0)20 7594 7086j.dear Website

 
 
//

Location

 

520City and Guilds BuildingSouth Kensington Campus

//

Summary

 

Summary

John has been an academic for over 30 years in the Mechanics of Materials Division of the Department of Mechanical Engineering and is a Professor of Mechanical Engineering.

Prior to joining Imperial in 1988, John was an SERC Research Fellow at the Cavendish Laboratory, Cambridge University where he did his first degree and PhD.

John has been successful in obtaining research grants from the UK and US Government (EPSRC, ONR, MRC & DTI/TSB), European Commission, UK and overseas companies. He is Director of the BIAM Centre, at Imperial College London and Executive Joint Director of the AVIC Centre, at Imperial College London.  His research expertise is structural integrity of materials including manufacturing and micro-structural effects. He is Associate Editor of the International Journal of Lightweight Materials and Manufacture. He has published 338 journal and conference papers; contributed to 17 books, supervised 63 PhDs and 22 RAs. Examples include: impact performance of aerospace and automotive components, blast performance of laminated glass facades and composite structures, creep life of materials in power-station plant, water distribution plant and high-strain rate properties of polymers, composites and a wide range of other materials for defence applications and also for medical research.

John is currently Head of the Composites, Adhesives and Soft Solids (CASS) Group (comprising of eight academics):

http://www.imperial.ac.uk/mechanical-engineering/research/mechanics-of-materials/composites-adhesives-and-soft-solids/

John is Executive Co-Director for the two AVIC Centres:

http://www.imperial.ac.uk/avic-design

http://www.imperial.ac.uk/biam-imperial

John Dear and Hugh MacGillivray organised the "Impact Club Conference on Impact, High Strain Rate and Blast Research Related to Structural Integrity" on Wednesday 25th May 2011 in the Department of Mechanical Engineering at Imperial College. For information on future courses, please click here.

Selected Publications

Journal Articles

Zhou J, Liu J, Zhang X, et al., 2019, Experimental and numerical investigation of high velocity soft impact loading on aircraft materials, Aerospace Science and Technology, Vol:90, ISSN:1270-9638, Pages:44-58

Domun N, Kaboglu C, Paton KR, et al., 2019, Ballistic impact behaviour of glass fibre reinforced polymer composite with 1D/2D nanomodified epoxy matrices, Composites Part B - Engineering, Vol:167, ISSN:1359-8368, Pages:497-506

Whiteman G, Case S, Millett JCF, et al., 2019, Uniaxial compression of single crystal and polycrystalline tantalum, Materials Science and Engineering A - Structural Materials Properties Microstructure and Processing, Vol:759, ISSN:0921-5093, Pages:70-77

Samieian M, Cormie D, Smith D, et al., On the bonding between glass and PVB in laminated glass, Engineering Fracture Mechanics, ISSN:0013-7944

Zhang X, Mohammed IK, Zheng M, et al., 2019, Temperature effects on the low velocity impact response of laminated glass with different types of interlayer materials, International Journal of Impact Engineering, Vol:124, ISSN:0734-743X, Pages:9-22

Liu H, Falzon B, Li S, et al., Compressive failure of woven fabric reinforced thermoplastic composites with an open-hole: an experimental and numerical study, Composite Structures, ISSN:1879-1085

Samieian M, Cormie D, Smith D, et al., Prediction of blast response in laminated glass, Engineering Structures, ISSN:0141-0296

Ibrahim Y, Li Z, Davies C, et al., 2018, Acoustic resonance testing of additive manufactured lattice structure, Additive Manufacturing, Vol:24, ISSN:2214-8604, Pages:566-576

Del Linz P, Liang X, Hooper P, et al., 2018, A numerical method for predicting the deformation of crazed laminated windows under blast loading, Engineering Structures, Vol:172, ISSN:0141-0296, Pages:29-40

Mohagheghian I, Charalambides M, Wang Y, et al., 2018, Effect of the polymer interlayer on the high-velocity soft impact response of laminated glass plates, International Journal of Impact Engineering, Vol:120, ISSN:0734-743X, Pages:150-170

Rolfe E, Quinn R, Sancho A, et al., 2018, Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skins, Multiscale and Multidisciplinary Modeling, Experiments and Design, Vol:1, ISSN:2520-8160, Pages:197-210

Kaboglu C, Yu L, Mohagheghian I, et al., 2018, Effects of the core density on the quasi-static flexural and ballistic performance of fibre-composite skin/foam-core sandwich structures, Journal of Materials Science, Vol:53, ISSN:0022-2461, Pages:16393-16414

Ahn J, Chen L, He E, et al., 2018, Optimisation of process parameters and weld shape of high power Yb-fibre laser welded 2024-T3 aluminium alloy, Journal of Manufacturing Processes, Vol:34, ISSN:1526-6125

Ahn J, He E, Chen L, et al., 2018, In-situ micro-tensile testing of AA2024-T3 fibre laser welds with digital image correlation as a function of welding speed, International Journal of Lightweight Materials and Manufacture, ISSN:2588-8404

Rolfe E, Kaboglu C, Quinn R, et al., 2018, High velocity impact and blast loading of composite sandwich panels with novel carbon and glass construction, Journal of Dynamic Behavior of Materials, ISSN:2199-7446, Pages:1-14

Li X, Jiang L, Mohagheghian I, et al., 2018, New insights into nanoindentation crack initiation in ion-exchanged sodium aluminosilicate glass, Journal of the American Ceramic Society, Vol:101, ISSN:0002-7820, Pages:2930-2940

Li X, Jiang L, Li J, et al., 2018, Elastic-plastic deformation in ion-exchanged aluminosilicate glass by loading rate dependent nanoindentation, Journal of Non-crystalline Solids, Vol:491, ISSN:1873-4812, Pages:79-88

Ahn J, He E, Chen L, et al., 2018, FEM prediction of welding residual stresses in fibre laser welded AA 2024-T3 and comparison with experimental measurement, International Journal of Advanced Manufacturing Technology, Vol:95, ISSN:0268-3768, Pages:4243-4263

Ahn J, He E, Chen L, et al., 2017, Determination of residual stresses in fibre laser welded AA2024-T3 T-joints by numerical simulation and neutron diffraction, Materials Science and Engineering A - Structural Materials Properties Microstructure and Processing, Vol:712, ISSN:0921-5093, Pages:685-703

Kaboglu C, Mohagheghian I, Zhou J, et al., 2017, High-velocity impact deformation and perforation of fibre-metal laminates, Journal of Materials Science, Vol:53, ISSN:0022-2461, Pages:4209-4228

Samieian MA, Cormie D, Smith D, et al., 2017, Temperature effects on laminated glass at high rate, International Journal of Impact Engineering, Vol:111, ISSN:0734-743X, Pages:177-186

Zhao Y, Patel Y, Hunt IA, et al., 2017, Preventing lithium ion battery failure during high temperatures by externally applied compression, Journal of Energy Storage, Vol:13, ISSN:2352-152X, Pages:296-303

Narayanan A, Dubey K, Davies C, et al., 2017, The creep of alloy 617 at 700 C: Material properties, measurement of strain and comparison between Finite Element Analysis and Digital Image Correlation, International Journal of Solids and Structures, Vol:129, ISSN:0020-7683, Pages:195-203

Xiong W, Wang X, Dear JP, et al., 2017, The effect of protrusion density on composite-metal joints with surfi-sculpt reinforcement, Composite Structures, Vol:180, ISSN:1879-1085, Pages:457-466

Ahn J, He E, Chen L, et al., 2017, The effect of Ar and He shielding gas on fibre laser weld shape and microstructure in AA 2024-T3, Journal of Manufacturing Processes, Vol:29, ISSN:1526-6125, Pages:62-73

Rolfe E, Kelly M, Arora H, et al., 2017, Failure analysis using X-ray computed tomography of composite sandwich panels subjected to full-scale blast loading, Composites Part B - Engineering, Vol:129, ISSN:1359-8368, Pages:26-40

Li X, Jiang L, Wang Y, et al., 2017, Correlation between K+-Na+ diffusion coefficient and flexural strength of chemically tempered aluminosilicate glass, Journal of Non-crystalline Solids, Vol:471, ISSN:1873-4812, Pages:72-81

Tebbutt JA, Vahdati M, Carolan D, et al., 2017, Numerical investigation on an array of Helmholtz resonators for the reduction of micro-pressure waves in modern and future high-speed rail tunnel systems, Journal of Sound and Vibration, Vol:400, ISSN:1095-8568, Pages:606-625

Kaboglu C, Pimenta S, Morris A, et al., 2017, The effect of different types of core material on the flexural behavior of sandwich composites for wind turbine blades, Journal of Thermal Engineering, Vol:3, ISSN:2148-7847, Pages:1102-1109

Jiang L, Wang Y, Mohagheghian I, et al., 2017, Subcritical crack growth and lifetime prediction of chemically strengthened aluminosilicate glass, Materials & Design, Vol:122, ISSN:0261-3069, Pages:128-135

Arora H, Del Linz P, Dear J, 2017, Damage and deformation in composite sandwich panels exposed to multiple and single explosive blasts, International Journal of Impact Engineering, Vol:104, ISSN:0734-743X, Pages:95-106

Mohagheghian I, Wang Y, Jiang L, et al., 2017, Quasi-static bending and low velocity impact performance of monolithic and laminated glass windows employing chemically strengthened glass, European Journal of Mechanics A - Solids, Vol:63, ISSN:0997-7538, Pages:165-186

Mohagheghian I, Wang Y, Zhou J, et al., 2017, Deformation and damage mechanisms of laminated glass windows subjected to high velocity soft impact, International Journal of Solids and Structures, Vol:109, ISSN:1879-2146, Pages:46-62

Rolfe E, Kelly M, Arora H, et al., 2016, X-ray CT analysis after blast of composite sandwich panels, Procedia Engineering, Vol:167, ISSN:1877-7058, Pages:176-181

Ahn J, He E, Chen L, et al., 2016, Prediction and measurement of residual stresses and distortions in fibre laser welded Ti-6Al-4V considering phase transformation, Materials & Design, Vol:115, ISSN:0261-3069, Pages:441-457

Ahn J, Chen L, He E, et al., 2016, Effect of filler metal feed rate and composition on microstructure and mechanical properties of fibre laser welded AA 2024-T3, Journal of Manufacturing Processes, Vol:25, ISSN:1526-6125, Pages:26-36

Mohamed M, Lin J, Foster A, et al., 2016, Formability investigation using a new test design for hot stamping processes, International Journal of Materials & Product Technology, Vol:54, ISSN:0268-1900, Pages:3-19

Jiang L, Wang L, Mohagheghian I, et al., 2016, Effect of residual stress on the fracture of chemically strengthened thin aluminosilicate glass, Journal of Materials Science, Vol:52, ISSN:1573-4803, Pages:1405-1415

Jia L, Yu L, Zhang K, et al., 2016, Combined modelling and experimental studies of failure in thick laminates under out of plane shear, Composites Part B - Engineering, Vol:105, ISSN:1359-8368, Pages:8-22

Sancho A, Cox MJ, Cartwright T, et al., 2016, Experimental techniques for ductile damage characterisation, Procedia Structural Integrity, Vol:2, ISSN:2452-3216, Pages:966-973

Cornish A, Smith RA, Dear J, 2016, Monitoring of strain of in-service railway switch rails through field experimentation, Proceedings of the Institution of Mechanical Engineers Part F -Journal of Rail and Rapid Transit, Vol:230, ISSN:0954-4097, Pages:1429-1439

Del Linz P, Wang Y, Hooper PA, et al., 2016, Determining Material Response for Polyvinyl Butyral (PVB) in Blast Loading Situations, Experimental Mechanics, Vol:56, ISSN:1741-2765, Pages:1501-1517

Ahn J, Chen L, Davies CM, et al., 2016, Parametric optimisation and microstructural analysis on high power Yb-fibre laser welding of Ti-6Al-4V, Optics and Lasers in Engineering, Vol:86, ISSN:1873-0302, Pages:156-171

Del Linz P, Hooper PA, Arora H, et al., 2016, Delamination properties of laminated glass windows subject to blast loading, International Journal of Impact Engineering, Vol:105, ISSN:1879-3509, Pages:39-53

Narayanan A, Maharaj C, Kelly M, et al., 2016, Recent developments in measuring creep strain in high temperature plant components, Strain, Vol:52, ISSN:1475-1305, Pages:467-477

Del Linz P, Liang X, Hooper PA, et al., 2016, An analytical solution for pre-crack behaviour of laminated glass under blast loading, Composite Structures, Vol:144, ISSN:0263-8223, Pages:156-164

Del Linz P, Hooper PA, Arora H, et al., 2015, Reaction forces of laminated glass windows subject to blast loads, Composite Structures, Vol:131, ISSN:1879-1085, Pages:193-206

Xiong W, Blackman B, Dear J, et al., 2015, The effect of composite orientation on the mechanical properties of hybrid joints strengthened by surfi-sculpt, Composite Structures, Vol:134, ISSN:1879-1085, Pages:587-592

Kelly M, Arora H, Worley A, et al., 2015, Sandwich panel cores for blast applications: materials and graded density, Experimental Mechanics, Vol:56, ISSN:1741-2765

Das S, Barekar N, El Fakir O, et al., 2015, Influence of intensive melt shearing on subsequent hot rolling and the mechanical properties of twin roll cast AZ31 strips (vol 144, pg 54, 2015), Materials Letters, Vol:147, ISSN:0167-577X, Pages:131-131

Arora H, Kelly M, Worley A, et al., 2015, Compressive strength after blast of sandwich composite materials., Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, Vol:372, ISSN:1471-2962

Das S, Barekar N, El Fakir O, et al., 2015, Influence of intensive melt shearing on subsequent hot rolling and the mechanical properties of twin roll cast AZ31 strips, Materials Letters, Vol:144, ISSN:0167-577X, Pages:54-57

Kelly M, Arora H, Dear JP, 2014, The comparison of various foam polymer types in composite sandwich panels subjected to full scale air blast loading, Procedia Engineering, Vol:88, ISSN:1877-7058, Pages:48-53

Das S, Barekar NS, El Fakir O, et al., 2014, Effect of melt conditioning on heat treatment and mechanical properties of AZ31 alloy strips produced by twin roll casting, Materials Science and Engineering A - Structural Materials Properties Microstructure and Processing, Vol:620, ISSN:0921-5093, Pages:223-232

El Fakir O, Wang L, Balint D, et al., 2014, Numerical study of the solution heat treatment, forming, and in-die quenching (HFQ) process on AA5754, International Journal of Machine Tools & Manufacture, Vol:87, ISSN:0890-6955, Pages:39-48

Albieri G, Barnes SJ, de Celis Alonso B, et al., 2014, Rapid bidirectional reorganization of cortical microcircuits., Cerebral Cortex, ISSN:1047-3211

Das S, Ji S, El Fakir O, et al., 2013, Melt Conditioned Twin Roll Casting (MC-TRC) of Thin Mg-Alloy Strips for Direct Stamping of Mg Components, Materials Science Forum, Vol:765, ISSN:0255-5476, Pages:170-+

Hooper PA, Sukhram RAM, Blackman BRK, et al., 2012, On the blast resistance of laminated glass, International Journal of Solids and Structures, Vol:49, ISSN:0020-7683, Pages:899-918

Jensen FM, Puri AS, Dear JP, et al., 2011, Investigating the impact of non-linear geometrical effects on wind turbine blades-Part 1: Current status of design and test methods and future challenges in design optimization, Wind Energy, Vol:14, ISSN:1095-4244, Pages:239-254

Arora H, Hooper PA, Dear JP, 2011, Dynamic response of full-scale sandwich composite structures subject to air-blast loading, Composites Part A: Applied Science and Manufacturing

Maharaj C, Dear JP, Morris A, 2009, A Review of Methods to Estimate Creep Damage in Low-Alloy Steel Power Station Steam Pipes, Strain, Vol:45, ISSN:0039-2103, Pages:316-331

More Publications