Report/Guide

McDonald, P J*; Gajewicz, A M*; Morrell, R (2017) The characterisation of cement based materials using T2 1H nuclear magnetic resonance relaxation analysis. Measurement Good Practice Guide. 144

Morrell, R; Kent, J (2015) The effect of test-piece chamfers on the determination of elastic moduli using the impact excitation method. NPL Report. MAT 77

Morrell, R; McCormick, N J; Lay, L A (2015) Edge chipping of ceramic cutting tools. NPL Report. MAT 76

Mingard, K P; Morrell, R; Jackson, P*; Lawson, S*; Patel, S*; Buxton, R* (2009) Improving the consistency of particle size measurement. Measurement Good Practice Guide. 111

Clay, K*; Jackson, J D*; Quested, P N; Morrell, R (2009) Improving single-crystal orientation determination for advanced nickel-based alloys. Measurement Good Practice Guide. 112

Roebuck, B; Gee, M G; Bennett, E G; Morrell, R (2009) Mechanical tests for hardmetals. Measurement Good Practice Guide. 20

Morrell, R (2008) Fractography of brittle materials. Measurement Good Practice Guide. 15

Chapman, L A; Morrell, R; Quested, P N; Brooks, R F; Chen, L-H*; Ford, D* (2008) PAMRIC: Properties of Alloys and Moulds Relevant to Investment Casting. NPL Report. MAT 9

Roebuck, B; Bennett, E G; Lay, L A; Morrell, R (2008) The measurement of palmqvist toughness for hard and brittle materials. Measurement Good Practice Guide. 9

Morrell, R (2007) Biaxial flexural strength testing of ceramic materials. Measurement Good Practice Guide. 12

Morrell, R (2007) Flexural strength testing of ceramics and hardmetals. Measurement Good Practice Guide. 7

Morrell, R; Roebuck, B; Bennett, E G; Lay, L A (2007) Microstructural measurement on ceramics and hardmetals. Measurement Good Practice Guide. 21

Bennett, E G; Gee, M G; Lay, L A; Morrell, R; Roebuck, B (2007) Tests for advanced technical ceramic materials performance. Measurement Good Practice Guide. 19

Lord, J D; Morrell, R (2007) Elastic modulus measurement. Measurement Good Practice Guide. 98

Morrell, R (2007) Investigation of an elastic modulus reference material. NPL Report. DEPC-MPE 035

Morrell, R; Gant, A J; Jennett, N M (2006) Characterising surface damage in advanced technical ceramics. NPL Report. DEPC-MPE 027

Morrell, R; Quested, P N; Jones, S*; Ford, D A* (2006) Studio Project: DISIC - Dimensional stability of ceramic casting moulds. NPL Report. DEPC-MPE 026

Morrell, R; Parfitt, M (2005) A stiff facility for controlled pre-cracking in fracture toughness tests. NPL Report. DEPC-MN 034

Newton, L; Gee, M G; Morrell, R (2005) Scratch edge chipping. NPL Report. DEPC-MN 026

Morrell, R; Brooks, R F (2005) Piston dilatometry applied to aluminium and nickel alloys. NPL Report. DEPC-MPE 020

Morrell, R; Roebuck, B (2005) A method for high-temperature fatigue testing of hardmetals and PM materials. NPL Report. DEPC-MN 018

Morrell, R; Roebuck, B (2005) Determining residual stress in hard brittle materials by the thin strip curvature method. NPL Report. DEPC-MN 016

Morrell, R; Ford, D A*; Harris, K* (2004) Caculations of modulus in different directions for single-crystal alloys. NPL Report. DEPC-MN 004

Morrell, R (2002) Determining elastic moduli of hardmetals. NPL Report. MATC(MN)33

Barnett, M; Morrell, R; Hill, G J; Cain, M G (2000) EC SMT project, 'CERAMELEC' WP10 - Electric Strength. NPL Report. CMMT(A)294

Byrne, W P; Morrell, R (2000) Results of the UK interlaboratory strength test exercide. NPL Report. CMMT(A)296

Gant, A J; Morrell, R (1999) CPD3 T3: Thermal cycling and mechanical properties of a unidirectional titanium matrix composite and a cross-ply ceramic matrix composite. NPL Report. CMMT(A)188

Morrell, R (1999) Pre-cracking test-pieces of brittle materials for fracture toughness measurement. NPL Report. CMMT(MN)35

Hendrix, M*; Bennett, E G; Morrell, R; Dortmans, L J M G*; De With, G* (1998) CEN/VAMAS phase volume fraction round robin. Final technical report. Technical Report.

Hendrix, M*; Bennett, E G; Morrell, R; Dortmans, L J M G*; De With, G* (1998) VAMAS. Technical working area 3, Ceramics, CEN/VAMAS phase volume fraction round robin, final technical report. Technical Report.

Lodeiro, M J; Maudgal, S; McCartney, L N; Morrell, R; Roebuck, B (1998) Critical review of interface testing methods for composites. NPL Report. CMMT(A)101

Morrell, R; Quested, P N (1998) Dilatometric measurement of melting behaviour of metal alloys. NPL Report. CMMT(A)106

Morrell, R (1997) Thermal properties of composites - measurements, models and thermal exposure derived changes in MMCs and CMCs. NPL Report. CMMT(MN)010

Morrell, R (1997) Thermal property measurements and data on composite materials. NPL Report. CMMT(MN)11

Morrell, R (1997) Thermal properties of composite materials - results of an interlaboratory comparison. NPL Report. CMMT(A)72

Lord, J D; Nimmo, W; Cooper, D*; Morrell, R (1997) Strain gauge techniques for measuring thermal expansion. NPL Report. CMMT(A)68

Morrell, R (1996) Measuring elastic properties of advanced technical ceramics - A review. NPL Report. CMMT(A)42

Morrell, R (1996) Traceability calibrating the 'Grindosonic', for impact excitation modulus measurement. NPL Report. CMMT(A)36

McCormick, N J; Morrell, R (1996) 3D finite element analysis of ceramic test-pieces. Technical Report.

Morrell, R; Newland, B G*; Stamenkovich, I*; Wasche, R* (1996) VAMAS technical report 23. Technical working area 14. A unified classification system for advanced technical ceramics. Testing and demonstrating the VAMAS classification scheme. Summary of issues in manual coding of commercial products. Final report. Technical Report.

Morrell, R (1995) Thermal properties of composite materials-measurements, models and thermal exposure derived changes in MMCs and CMCs. NPL Report. CMMT(A)6

Morrell, R (1993) A review of mechanical test methods for ceramic matrix composites. NPL Report. DMM(A)122

Reece, M J; Cox, J M; Morrell, R; Phillips, M R (1993) Estimation of Weibull modulus from dynamic and static fatigue experiments. NPL Report. DMM(A)108

Article

Farooqui, A; Morrell, R; Wu, J; Wright, L; Lodeiro, M; Whiting, M; Pekris, M; Saunders, T (2023) Development and Characterisation of SiC-Mo High Temperature Multi-Layer Laser Flash Artefacts with Partial Debonding. International Journal of Thermophysics, 44. 47

D'Souza, N; Ravichandran, S; Donovan, S; Daum, P; Morrell, R; Nye, Z; Lancaster, R J (2022) On the design optimisation of direct energy deposited support structures to repair aeroengine turbine segments. Additive Manufacturing, 56. 102905

Farooqui, A; Morrell, R; Wu, J Y; Wright, Louise; Hay, B; Pekris, M; Whiting, M J; Saunders, T (2022) Development of High Temperature Multi-Layer Laser Flash Artefacts. International Journal of Thermophysics, 43 (1). 13

Wu, J; Morrell, R; Clark, J; Chapman, L (2021) Characterisation of the NPL Thermal Conductivity Reference Material Inconel 600. International Journal of Thermophysics, 42 (2). 28 ISSN 0195-928X

Wu, J; Morrell, R; Chapman, L; Clark, J; Quested, P (2018) Characterisation of thermal conductivity reference material using the NPL axial heat flow apparatus. High Temperatures - High Pressures, 47 (6). pp. 511-524.

Quested, P; Morrell, R; Dinsdale, A; Chapman, L (2018) The Measurement and Estimation of Density for Selected Liquid Alloys. High Temperatures - High Pressures, 47 (4). pp. 365-377.

Bamber, R; Morrell, R; Waldon, C; Shannon, M (2017) Design substantiation of ceramic materials on fusion reactor confinement boundaries. Fusion Engineering and Design, 125. pp. 283-289.

Morrell, R; Mingard, K; Zunega, J* (2017) Fractography of hardmetal dies used for the manufacture of polycrystalline diamond. J. Eur. Ceram. Soc., 37 (14). pp. 4259-4264.

Wu, J; Morrell, R; Allen, C; Mildeova, P; Turzo-Andres, E*; Hammerschmidt, U*; Rafeld, E*; Blahut, A*; Hameury, J* (2017) Characterization of a high-temperature thermal conductivity reference material. Int. J. Thermophysics, 38 (5). p. 66.

Gower, M R L; Shaw, R M; Wright, L; Urquhart, J; Hughes, J; Gnaniah, S; Morrell, R; Garstka, T* (2016) Determination of ply level residual stresses in a laminated carbon fibre-reinforced epoxy composite using constant, linear and quadratic variations of the incremental slitting method. Compos. A, Appl. Sci. Manuf., 90. pp. 441-450.

Karunaratne, M S A*; Kyaw, S*; Jones, A*; Morrell, R; Thomson, R C* (2016) Modelling the coefficient of thermal expansion in Ni based superalloys and bond coatings. J. Mater. Sci., 51 (9). pp. 4213-4226.

Lord, J D; Morrell, R (2014) Comparison of static and dynamic methods for measuring stiffness of high modulus steels and metal composites. Can. Metall. Q., 53 (3). pp. 292-299.

Harrer, W*; Deluca, M*; Morrell, R (2014) Failure analysis of a ceramic ball race bearing made of Y-TZP zirconia. Eng. Failure Anal., 36. pp. 262-268.

Harrer, W*; Morrell, R; Danzer, R* (2014) Fractography of biaxial tested Si3N4-specimens. J. Eur. Ceram. Soc., 34 (14). pp. 3283-3289.

Bermejo, R*; Supancic, P*; Krautgasser, C*; Morrell, R; Danzer, R* (2013) Subcritical crack growth on low temperature co-fired ceramics under biaxial loading. Eng. Fract. Mech., 100. pp. 108-121.

Wu, J; Morrell, R (2012) Corrections for thermal expansion in thermal conductivity measurement of insulations using the high-temperature guarded hot-plate method. Int. J. Thermophysics, 33 (2). pp. 330-341.

Harrer, W*; Danzer, R*; Morrell, R (2012) Influence of surface defects on the biaxial strength of a silicon nitride ceramic - increase of strength by crack healing. J. Eur. Ceram. Soc., 32 (1). pp. 27-35.

Morrell, R; Danzer, R*; Milosev, I*; Trebse, R* (2012) An assessment of in-vivo failures of alumina ceramic total hip joint replacements. J. Eur. Ceram. Soc., 32 (12). pp. 3073-3084.

Harrer, W*; Morrell, R; Lengauer, M*; Danzer, R*; Berroth, K*; Zleppnig, W* (2011) Failure analysis of silicon nitride rings for hot rolling of highly alloyed steel and superalloy wires. Eng. Failure Anal., 18 (1). pp. 138-147.

Bermejo, R*; Supancic, P*; Kraleva, I*; Morrell, R; Danzer, R* (2011) Strength reliability of 3D low temperature co-fired multilayer ceramics under biaxial loading. J. Eur. Ceram. Soc., 31 (5). pp. 745-753.

Clay, K*; Quested, P N; Morrell, R; Mingard, K P (2011) A review of the measurement of single crystal orientation parameters of nickel castings. Adv. Mater. Res., 278. pp. 84-89.

Lord, J D; Roebuck, B; Morrell, R; Lube, T* (2010) 25 year perspective aspects of strain and strength measurement in miniaturised testing for engineering metals and ceramics. Mater. Sci. Technol., 26 (2). pp. 127-148.

Morrell, R (2010) Effective methods for determining hardness and toughness of structural ceramics. Ceram. Trans., 219. pp. 355-361.

Lord, J D; Morrell, R (2010) Elastic modulus measurement - obtaining reliable data from the tensile test. Metrologia, 47 (2). S41-S49

Morrell, R; Danzer, R*; Supancic, P*; Harrer, W*; Puchegger, S*; Peterlik, H* (2010) Meso-scale mechanical testing methods for diamond composite materials. Int. J. Refrac. Met. Hard Mat., 28 (4). pp. 508-515.

Clay, K*; Mingard, K P; Morrell, R; Quested, P N (2010) R-value measurement issues for grain boundaries in nickel single crystal castings. Mater. Sci. Technol., 26 (7). pp. 781-786.

Morrell, R (2009) Fractography and fracture toughness measurement. Key Eng. Mater., 413. pp. 17-27.

Quested, P N; Brooks, R F; Chapman, L; Morrell, R; Youssef, Y*; Mills, K C* (2009) The measurement and estimation of the thermo-physical properties of nickel base superalloys. Mater. Sci. Technol., 25 (2). pp. 154-162.

Roebuck, B; Maderud, C*; Morrell, R (2008) Elevated temperature fatigue testing of hardmetals using notched testpieces. Int. J. Refrac. Hard Mat., 26 (1). pp. 19-27.

Morrell, R; Roebuck, B (2007) Quantitative challenges in characterising the mechanical properties of hard materials. MAPAN - J Metrology Soc. India, 23 (3). pp. 153-166.

Morrell, R (2006) Fracture toughness testing for advanced technical ceramics - internationally agreed good practice. Adv. Appl. Ceram., 105 (2). pp. 88-98.

Robertson, C J*; Hazell, P J*; Gotts, P L*; Pickup, I M*; Morrell, R (2005) The effective hardness of hot pressed boron carbide with increasing shock stress. Ceram. Eng. Sci. Proc., 26 (7). pp. 151-159.

Morrell, R; Quested, P N (2003) Evaluation of piston dilatometry for studying the melting behaviour of metals and alloys. High Temp.-High Press., 35/36. pp. 417-435.

Roebuck, B; Stewart, M; Morrell, R; Gee, M G (2001) Mapping hardness. Mater. World (Novemb). pp. 16-17.

Roebuck, B; Stewart, M; Morrell, R; Gee, M G; Plint, G* (2001) Mapping hardness using automated depth sensing process. Surf. Eng., 17 (6). pp. 447-449.

Morrell, R (2001) Mechanical tests for advanced technical ceramics - development of standardised procedures. Nondestruct. Test. Eval., 17 (4-5). pp. 299-314.

Roebuck, B; Morrell, R (2001) Microstructure-property relationships for ultrafine grained materials. Metallurgia (August). pp. 8-9.

Roebuck, B; Morrell, R; Mummery, P M (2000) Effects of high temperature mechanical damande on physical properties of unidirectional Ti/SiC metal matrix composite. Mater. Sci. Technol., 16 (7-8). pp. 817-824.

Morrell, R; McCormick, N J; Bevan, N; Lodeiro, M*; Margetson, J* (1999) Biaxial disc flexure - modulus and strength testing. Br. Ceram. Trans. J., 98 (5). pp. 234-240.

Morrell, R (1999) Biaxial flexural strength testing - a review. Institute of Materials, 718 (2). pp. 561-562.

Cain, M G; Lay, L; Morrell, R (1999) Surface roughness measurement of engineering ceramics - results of an interlaboratory evaluation. Institute of Materials Conference Series, 718 (2). pp. 563-564.

Morrell, R; Hendrix, M*; De With, G*; Vandermeulen, W*; Le Doussal, H*; Kromp, K*; Rudolph, E* (1999) Young's modulus of ceramic materials - an intercomparison of methods. Institute of Materials, 718 (2). pp. 565-566.

Bennett, E G; Dortmans, L J M G*; Hendrix, M*; Morrell, R; De With, G* (1997) CEN/VAMAS study of phase volume fraction measurement - a preliminary review of results. Key Eng. Mater., 132-6. pp. 2111-2114.

Cox, J M; Morrell, R; Gee, M G (1997) Direct measurement of friction applicable to hot strength measurements. Key Eng. Mater., 132-6. pp. 476-479.

Hall, D J; Gohil, D D; Saunders, S R J; Morrell, R (1997) Novel approaches to determining oxidation phenomena in non-oxide ceramics. Key Eng. Mater., 132-6. pp. 1584-1587.

D'Errico, G E *; Calzavarini, R*; Chiara, R *; Morrell, R; Lay, L (1997) Performance of ceramic cutting tools in turning operations. Ind. Ceram., 17 (2). pp. 80-83.

Roebuck, B; Gee, M G; Morrell, R (1996) Developments in testing and mechanical properties of hard materials. Powder Metall., 39 (3). pp. 213-218.

Morrell, R (1996) Standardized guidelines for fractography of advanced ceramics - a view from Europe. Ceramic Transactions, 64. pp. 71-90.

Morrell, R (1995) Mechanical test methods for ceramic matrix composites. Br. Ceram. Trans. J., 94 (1). pp. 1 - 9.

Morrell, R (1994) Toughness of hard materials: philosophy, methods, results. Cer. Acta, 6 (2-3). 5 - 17

Morrell, R; McCartney, L N (1993) Measurement of properties of brittle matrix composites. Br. Ceram. Trans. J., 92 (1). pp. 1-7.

Conference or Workshop Item

Waldon, C*; Morrell, R; Buckthorpe, D* (2009) Engineering practices for tokamak window assemblies. In: 17th International Conference on Nuclear Engineering (ICONE-17)., 12-16 July 2009, Brussels, Belgium.

Roebuck, B; Gee, M G; Morrell, R (2001) Hardmetals - microstructural design, testing and property maps. In: 15th Plansee Seminar, June 2001, Reutte, Austria.

Morrell, R (1998) Status of standardisation of test methods in CEN/TC184. In: 9th CIMTEC World Ceramics Congress and Forum on New Materials, June 1998, Florence, Italy.

Bennett, E G; Dortmans, L J M G*; Hendrix, M*; Morrell, R; De With, G* (1997) CEN/VAMAS study of phase volume fraction measurement - a preliminary review of results. In: Proc. Euroceramics V, June 1997, Versailles, France.

Cox, J M; Morrell, R; Gee, M G (1997) Direct measurement of friction applicable to hot strength measurements. In: Proc. Euroceramics V, June 1997, Versailles, France.

Hall, D J; Gohil, D D; Saunders, S R J; Morrell, R (1997) Novel approaches to determining oxidation phenomena in non-oxide ceramics. In: Euroceramics V, June 1997, Versailles, France.

Amato, I*; Maretto, B*; Morrell, R (1996) Sintering and mechanical behaviour of silicon nitride-silicon carbide nanocomposites. In: European Conference on Advances in Hard Materials Production, May 1996, Stockholm, Sweden.

Dortmans, L J M G*; Morrell, R; De With, G* (1994) Round robin on grain size measurement for advanced technical ceramics. In: Proc. 8th World Ceramic Congress and Forum on New Materials, 28 June - 4 July 1994, Florence, Italy.

Book Chapter/Section

Newland, B G*; Morrell, R (2002) Drivers and progress in the CEN TC184 standards activities for advanced technical ceramics in Europe. In: Ceramic Transactions Volume 133 - Improved Ceramics through New Measurements, Processing and Standards. American Ceramic Society, pp. 241-250. ISBN 1-57498-147-1