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Composite materials are increasingly used in aerospace, underwater, and automotive structures. They provide unique advantages over their metallic counterparts, but also create complex challenges to analysts and designers. Practical Analysis of Composite Laminates presents a summary of the equations governing composite laminates and provides practical methods for analyzing most common types of composite structural elements. Experimental results for several types of structures are included, and theoretical and experimental correlations are discussed. The last chapter is devoted to practical analysis using Designing Advanced Composites (DAC), a PC-based software on the subject. This comprehensive text can be used for a graduate course in mechanical engineering, and as a valuable reference for professionals in the field.
The deformation on cylindrical surfaces of holes in tensile loaded laminated composite specimens was measured using new moiré interferometry techniques. These new techniques were developed and evaluated using a 7075-T6 aluminum control specimen. Grating replication techniques were developed for replicating high quality diffraction gratings onto the cylindrical surfaces of holes. Replicas of the cylindrical specimen gratings (undeformed and deformed) were fabricated onto circular steel sectors. Narrow angular regions of these sector gratings were directly evaluated in a moiré interferometer. This moiré interferometry approach eliminated potential sources of error associated with other moiré interferometry approaches. Two composite tensile specimens, fabricated from IM7/5250-4 pre-preg with ply lay-ups were examined using the newly developed moiré interferometry techniques. The measured strains were compared with the three-dimensional analysis technique known as Spline Variational Elastic Laminate Technology (SVELT), resulting in a very close match and corroborating the usefulness of SVELT.
Since its development in the late 1970s, the Moire Fringe method has become a standard technique for the measurement of the behavior of materials and structures. Edited by one of the co-inventors of the technique, the Handbook of Moire Measurement brings together a series of extended case studies from recognized experts in the field. The emphasis i
Structural Analysis of Polymeric Composite Materials studies the mechanics of composite materials and structures and combines classical lamination theory with macromechanic failure principles for prediction and optimization of composite structural performance. This reference addresses topics such as high-strength fibers, commercially-available compounds, and the behavior of anisotropic, orthotropic, and transversely isotropic materials and structures subjected to complex loading. It provides a wide variety of numerical analyses and examples throughout each chapter and details the use of easily-accessible computer programs for solutions to problems presented in the text.