Special Issue "Creep and Fracture of Engineering Materials and Structures"
Deadline for manuscript submissions: closed (30 April 2012)
Prof. Dr. Bill Plumbrige
Materials Engineering, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK
Phone: +44 1908 652 630
Fax: +44 1908 653 858
Creep is time-dependent deformation under constant load or stress. It has been recognised as an engineering challenge for more than a century, and traditionally, the key design parameter has been ‘time to fracture’ as a function of applied stress and temperature. More recently, in applications, such as close-tolerance turbines and miniaturised equipment, ‘time to a critical strain’ has become a more appropriate failure criterion.
It is often regarded as a high temperature phenomenon, although this can be misleading since it is the homologous temperature (for metallic materials, this is the ratio of the current temperature to the melting temperature, expressed in degrees Kelvin) that is the salient factor in determining the significance of creep. Consequently, creep may still be a problem in solders for electronics at temperatures as low as −50 °C.
Creep may occur in all classes of materials (metals, ceramics, polymers and composites) although the phenomena involved are quite disparate. Even for a single material type, such as metals, one or more mechanisms may be involved, depending upon the operating conditions (stress, temperature, strain rate). For example, the dominant deformation process may be occurring at the grain boundaries or within the grains themselves. Further sub divisions are possible which explains the plethora of constitutive expressions for describing creep that have been developed over the years. With the advent of further miniaturisation and nanostructures, their number will undoubtedly mushroom, but the need to identify the dominant creep mechanism, both in the laboratory and in the field, will remain paramount, if reliable creep performance is to be achieved.
That this Special Issue contains a diverse range of papers should be regarded as strength. Potentially, there is much to gain from cross-fertilisation between different material-specific and application-specific approaches.Prof. Dr. Bill J. Plumbridge
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed Open Access monthly journal published by MDPI.
- creep processes in materials
- failure criteria
- life prediction
- dominant mechanisms
Materials 2012, 5(5), 909-921; doi:10.3390/ma5050909
Received: 14 March 2012; in revised form: 9 May 2012 / Accepted: 11 May 2012 / Published: 22 May 2012| Download PDF Full-text (894 KB)
Article: Surface Fractal Analysis for Estimating the Fracture Energy Absorption of Nanoparticle Reinforced Composites
Materials 2012, 5(5), 922-936; doi:10.3390/ma5050922
Received: 19 March 2012; in revised form: 8 May 2012 / Accepted: 11 May 2012 / Published: 23 May 2012| Download PDF Full-text (222 KB)
Article: Influences of Sample Preparation on Nanoindentation Behavior of a Zr-Based Bulk Metallic Glass
Materials 2012, 5(6), 1033-1039; doi:10.3390/ma5061033
Received: 6 April 2012; in revised form: 16 May 2012 / Accepted: 29 May 2012 / Published: 1 June 2012| Download PDF Full-text (112 KB)
Review: Strain Measurements within Fiber Boards. Part I: Inhomogeneous Strain Distribution within Medium Density Fiberboards (MDF) Loaded Perpendicularly to the Plane of the Board
Materials 2012, 5(6), 1115-1124; doi:10.3390/ma5061115
Received: 16 May 2012; in revised form: 14 June 2012 / Accepted: 15 June 2012 / Published: 19 June 2012| Download PDF Full-text (381 KB)
Materials 2012, 5(8), 1389-1403; doi:10.3390/ma5081389
Received: 28 March 2012; in revised form: 7 August 2012 / Accepted: 8 August 2012 / Published: 16 August 2012| Download PDF Full-text (1171 KB)
Article: Strain Measurements within Fibre Boards. Part II: Strain Concentrations at the Crack Tip of MDF Specimens Tested by the Wedge Splitting Method
Materials 2012, 5(8), 1495-1507; doi:10.3390/ma5081495
Received: 27 June 2012; in revised form: 17 August 2012 / Accepted: 21 August 2012 / Published: 23 August 2012| Download PDF Full-text (1131 KB)
Materials 2012, 5(11), 2151-2175; doi:10.3390/ma5112151
Received: 28 July 2012; in revised form: 27 September 2012 / Accepted: 18 October 2012 / Published: 2 November 2012| Download PDF Full-text (1187 KB)
Article: Strain Measurements within Fibreboard. Part III: Analyzing the Process Zone at the Crack Tip of Medium Density Fiberboards (MDF) Double Cantilever I-Beam Specimens
Materials 2012, 5(11), 2190-2204; doi:10.3390/ma5112190
Received: 13 September 2012; in revised form: 15 October 2012 / Accepted: 29 October 2012 / Published: 7 November 2012| Download PDF Full-text (754 KB)
Last update: 22 January 2013