Category: ADVANCES IN COMPOSITE MATERIALS – ECODESIGN AND ANALYSIS

Design, Manufacture and Performance Evaluation of Non-Asbestos Sealing Composites

Boqin Gu, Ye Chen and Jianfeng Zhou Nanjing University of Technology, China 1. Introduction Asbestos was once considered to be a "miracle mineral". This naturally occurring silicate has many desirable characteristics, including resistance to fire, heat, and corrosion. It is strong, durable and flexible. Asbestos is inexpensive because it is available in abundant quantities. Its […]

Generalized Hooke’s eco-law for unidirectional ply

In high-performance composite structures, structural components are manufactured mainly from unidirectional fibre-reinforced plies, where the ply axes are identified in the principal coordinate system with numbers 1, 2 and 3. Whereas, the laminate axes are identified in the global coordinate system (Cartesian coordinates) with letters x, y and z (Jones, 1999 & Saarela, 1994). The […]

Eco-characterisation of composite materials

To further explain this approach, let us consider a simple standard material characterisation test under uniaxial mechanical tension, chosen because it is the easiest and most convenient mechanical test (Attaf, 2008). For better understanding and more explicit interpretation, the results are presented in the form of conventional stress-strain diagram, where the x-axis represents strain є […]

Material eco-characterisation and advanced eco-formulations

Throughout the design process, it is considered that the condition of intersection between Q, H & E is always performed, so the product of the associated eco-coefficients. For notation simplicity, this product expressed by axpxy may be reduced and replaced by a single factor called "eco-efficiency factor", denoted for example by the Greek letter X. […]

Assessment of the eco-coefficients using code colours

To further facilitate the understanding of the ecodesign modelling and the approach allowing the calculation of different eco-coefficients, we think that it will be easy to formulate the problem by simply referring to Figure 3, which illustrates the synthesis of additive colours between the three primary RGB ones. For instance, the red colour characterises the […]

Practical descriptions of the variable probability elements

To be familiar with the probability variable elements expressed by Equation (2), let us consider for example the statement "quality-assurance aspect is achievable and sustainable for the mould polymerisation process” and we let the letter "x” denotes the property named "quality- assurance aspect is achievable and sustainable” and the subscript "k” refers to the stage […]