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Engineering Mechanics of Composite Materials

Nisan 24, 2022

Kompozit malzemelerin mühendislik mekaniği hakkındaki bilgiler aşağıda yer almaktadır. Ayrıntılı bilgi almak için aşağıdaki linke tıklayınız.

Although the underlying concepts of composite materials go back to antiquity, the technology was essentially developed and most of the progress occurred in the last three decades, and this development was accompanied by a proliferation of literature in the form of reports, conference proceedings, journals, and a few dozen books.

The material in this book, which can be covered in one semester, is based on lecture notes that we have developed over the last fifteen years in teaching formal courses and condensed short courses at our respective institutions, and we have incorporated much of the feedback received from students.

The properties of a composite material depend on the properties of the constituents, their geometry, and the distribution of the phases.
One of the most important parameters is the volume (or weight) fraction of reinforcement or fiber volume ratio. The distribution of the reinforcement determines the homogeneity or uniformity of the material system.
The more nonuniform the reinforcement distribution, the more heterogeneous the material, and the higher the scatter in properties and the probability of failure in the weakest areas.
The geometry and orientation of the reinforcement affect the anisotropy of the system.
The phases of the composite system play different roles, which depend on the type and
application of the composite material.
In the case of low- to medium-performance composite materials, the reinforcement, usually in the form of short fibers or particles, may provide some stiffening but only limited strengthening of the material.
The matrix, on the other hand, is the main load-bearing constituent governing the mechanical properties of the material.
In the case of high-performance structural composites, the normally continuous fiber reinforcement is the backbone of the material, which determines its stiffness and strength in the fiber direction.
The matrix phase provides protection for the sensitive fibers, bonding, support, and local stress transfer from one fiber to another.
The interphase, although small in dimensions, can play an important role in controlling the failure mechanisms, failure propagation, fracture toughness and the overall stress-strain behavior to failure of the material.

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