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Design and Manufacturing of Composite Structures

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (1 December 2021) | Viewed by 1976

Special Issue Editor


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Guest Editor
Department of Mechanical and Industrial Engineering, Tallinn University of Technology, 19086 Tallinn, Estonia
Interests: design optimization; numerical methods; Haar wavelet methods; composite structures; fractional differential equations; nanocomposites; graphene structures; nonlocal elasticity theories; laminated glass panels; solar panels
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue covers research topics related with the development of composite materials and structures. One research area considered is structural analysis of composite structures (beams, plates, shells, laminates, FGM structures, solar panels, etc.) starting with analytical and semi-analytical methods and proceeding with numerical methods including FEM, DQM, FDM, meshless and wavelet methods, etc. Some recent trends involved are related with structural analysis of:

  • Nanocomposites, development of nonlocal theories, corresponding numerical algorithms and tools;
  • Smart materials (functional materials, materials with structural health monitoring capabilities).

Theoretical and numerical analysis is supported with experimental study. The experimental evaluation of the properties of composite structures and their components is included (mechanical, nondestructive testing).

Another research area considered is design optimization of composite materials and structures covering development of traditional and artificial intelligence (AI)-based optimization algorithms and techniques. Extra attention is paid to the development of cost-effective solutions utilizing:

  • Decomposition methods;
  • Hierarchical optimization procedures;
  • Response modeling (artificial neural networks, kriging, wavelet methods, splines, regression).

The sensitivity and robustness analysis are considered tools for providing safe engineering design solutions.

Prof. Dr. Jüri Majak
Guest Editor

Manuscript Submission Information

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. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short 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 thoroughly refereed through a single-blind 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 semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • composite materials and structures
  • analytical and numerical analysis
  • experimental study
  • design optimization
  • mechanical testing
  • nondestructive testing
  • Artificial Intelligence

Published Papers (1 paper)

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Research

23 pages, 1093 KiB  
Article
Secondary Creep Analysis of FG Rotating Cylinder with Exponential, Linear and Quadratic Volume Reinforcement
by Manoj Sahni, Parth Dinesh Mehta, Ritu Sahni, Ernesto León-Castro and Luis F. Espinoza-Audelo
Materials 2022, 15(5), 1803; https://doi.org/10.3390/ma15051803 - 28 Feb 2022
Cited by 5 | Viewed by 1476
Abstract
Creep is an irreversible time-dependent deformation in which a material under constant mechanical stress and elevated temperature for a considerably prolonged period of time, starts to undergo permanent deformation. Creep deformation occurs in three stages namely, primary, secondary and tertiary. Out of these [...] Read more.
Creep is an irreversible time-dependent deformation in which a material under constant mechanical stress and elevated temperature for a considerably prolonged period of time, starts to undergo permanent deformation. Creep deformation occurs in three stages namely, primary, secondary and tertiary. Out of these three stages, secondary or steady state creep is particularly an area of engineering interest as it has almost a constant creep rate. Creep deformation plays a significant role in understanding effective service life of an engineering component working under high temperature conditions as such components such as super-heater and re-heater tubes and headers in a boiler, jet engines operating at temperature as high as 1200 C, usually experience a failure or rupture due to creep phenomenon. Design engineers keep a close attention on working stress conditions and elevated temperature under which an engineering component is expected to work as these conditions determine the onset of creep behavior in an engineering component. By recognizing the parameters of material response to creep behavior, engineers can analyse the useful service life and hazardous working conditions for an engineering components. Recognizing the creep phenomenon as high temperature design limitation, ASME Boiler and Pressure Vessel Code have provided guidelines on maximum allowable stresses for materials to be used in creep range. One of the criteria for determination of allowable stresses is 1% creep deformation of material in 100,000 h of service. Thus, the study of creep behavior in engineering components pertaining to high stress and temperature working conditions is very important as it affects the reliability and performance of the engineering components. The aim of our study is to understand the behavior of secondary creep deformation so that an advanced reinforced functionally graded material with better creep resistance, can be designed. In this paper, a secondary creep analysis of functionally graded (FG) thick-walled rotating cylinder under internal and external pressure is conducted. The novelty of the model intends to specify secondary creep stresses and strains by employing exponential, linear and quadratic volume reinforcement for SiCp ceramic in Al metal matrix in radial direction. This will help us to understand the effect of volume reinforcement in FG cylinder under internal/external pressure and rotating centrifugal body force by obtaining secondary creep stresses and strains. The response of the FG cylinder with isotropic material is analyzed and the solution for stress–strain rates in radial and tangential directions are obtained in closed form. Comparison of steady state creep stresses and strains under exponential, linear and quadratic volume reinforcement profiles are discussed and presented graphically. Full article
(This article belongs to the Special Issue Design and Manufacturing of Composite Structures)
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