Low Velocity Impact And Impact After Compression Of Cork Based Composite Material

The tensile testing was done on the three composite specimens (90°, and two 45°) were completed with a servo-hydraulic load frame with a wedge. The one in the lab was the MTS 647 hydraulic wedge grip and an 810 material test system. The specimens had strain gages with a Wheatstone bridge to collect data such as time, distance, load, axial strain, and transverse strain. From the strain gages, evidence can support how and when the specimen material failed under the stress being applied to it. The test was run for three times on three different specimens. The first specimen that was tested in the hydraulic load was the 0°/90° specimen, which is made of carbon and epoxy laminate composite.

However, the absence of plastic deformation does not mean that composites are brittle materials like monolithic ceramics. The heterogeneous nature of composites result in complex failure mechanisms which impart toughness. Fiber-reinforced materials have been found to produce durable, reliable structural components in countless applications. The unique characteristic of composite materials, especially anisotropy, require the use of special design

The primary research theme of impact biomechanics is dedicated to minimizing the prevalence of injury through environmental or impact modifications. Experimental research on head impact biomechanics has been going on for at least 78 years. Some of the first studies on head injuries and skull fractures due to impacts were performed around the beginning of the 1940’s at Wayne State University by Steve Gurdjian, and Herbert Lissner. These first studies used cadaveric skulls, and anesthetized dogs to establish a tolerance curve for skull fracture. This information was applied to improve the safety of cars by changing dashboard padding to mitigate forces in event of impact against the head. This pursuit included investigation and development in

A research team at the Norwegian University of Science designs steel, aluminium, steel, plastic and vehicle components that can absorb the shock of a high impact collision. The team aims to protect passengers in high energy crashes, and their projects are funded by the research Council of Norway. Members of the team are very knowledgeable of aluminum, and their expertise makes them perfect, and the automobile industry depends on them to provide vehicle safety information.

This simple diagram shows that when more layers of Kevlar are added more protection is provided. As depicted, 8 layers of Kevlar has a penetration velocity of over 2000 km/h or 1822 ft/s. It is also important to note that while Kevlar demonstrates very high strength it is also very light. In fact it is

Carbon fiber in all aspects is a material consisting of thin fibers of nearly pure carbon made by subjecting various organic raw materials to high temperatures, combined with asynthetic resins to produce a strong, lightweight material use in construction of aircraft and spacecraft (dictionary 2016). This composite material dates back to the 1950s where the tensile strength of carbon fiber was discovered and put into work. 50 years later carbon fiber is still well used and in great demand as the benefits of it proved to be great for the race car industry. The purpose of this project is to examine the mechanical properties of carbon fiber, and the benefits that it provides to the race car industry as well as predicting what other applications will occur in the

The aim of the lab session was to study the properties of composite materials by testing the materials in tension. The test composite materials to be tested comprised of carbon and fibreglass and

The building materials available to engineers today are vastly improved over those of the past. One class which has seen wide spread usage in many fields are composites. These new materials first appeared on the aerospace scene in the early 1970’s, for these materials were found to provide many benefits over the previous metal-based designs.

This paper discusses the different properties of composite materials under static testing condition to determine the effect of aging due to change in temperature and moisture content. Effects on tensile, shear, impact, stiffness and fatigue parameters are studied. For each property, application specific composite materials are taken into consideration with different stacking sequence and number of plies. Different samples of these are then introduced to different hygrothermal environments for example: temperatures ranging from -50 degree Celsius to +50 degree Celsius or kept in wet conditions for 24 hours at different temperatures of 21, 37 and 50 degree Celsius etc. Different tests are performed based on the material property to observe a change from the initial unaged specimen. To study every property a different test method is discussed. A final comparison for each property between the unaged and aged specimen is shown in order to see the property’s dependence on temperature and moisture. This comparison highlights the temperature and moisture dependent properties and showcase a trend. Properties like tensile modulus, shear modulus, shear strength, flexural stiffness and fatigue life show a decrease with increase in temperature and moisture content while Poisson’s ratio and impact strength increase with increase in temperature and moisture content.

Several mechanical tests have to be applied for measuring static and dynamic properties of materials and most of them involve applying a force to the material and measuring its displacement. Through these tests, measuring the stress applied and the resulting strain, it is possible to calculate material properties such as the Young modulus, the physical parameter corresponding to the material stiffness.

Introduction: The available life cycle cost (LCC) models and procurement strategies do not take into consideration the varied manufacturing techniques for advanced composite materials. The increased use of advanced composite materials in aerospace

Furthermore, flax fiber modulus is comparable to that of glass but has a lower density, this means that flax fibers actually have a higher specific stiffness than glass fibers. The excellent mechanical properties of flax, combined with the added functionalities they bring, make them a very attractive potential material for fiber reinforced composites. Their remarkable advantages compared with those conventional inorganic man-made fillers enhance their commercial and research

Design technicians and engineers love to use carbon fibre in manufacturing as it has many desirable properties. First of all is its strength. Carbon fibre is five times stronger than steel and is twice as stiff [2]. The strands of carbon are lined up parallel to each other when producing a sheet. For maximum results in strength, the fibres must be parallel with the forces that will act upon that element, this is to make sure it can withstand the forces going through the object when in use.

Composite materials and structures are particularly attractive for aerospace applications due to their high stiffness, high strength and low weight properties. The use of such structures allows for an overall aircraft mass reduction, reduced fuel consumption and increased service life resulting in a reduction in aircraft operating costs.

A single material can’t provide the all expected properties for a particular application, at its isotropic level, carrying single homogenous phase. So, in order to get identified properties for any particular application, we may require composing the material in such a way, so that we can achieve the producible properties for desired application. This composed form of two or more than two material is termed as "composite". Composite is introductorily the micromechanical aspect of two or more combined materials. In broad sense, a "composite is a materials system, composed of two or more physically distinct phase whose combination produces aggregate properties that