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Lecture

Mechanical Joining: Fasteners and Integral Joints

In course

MSE-464: Assembly techniques

Introduction to the assembly of materials by homogeneous or heterogeneous joints (welding, bonding, mechanical assembly). Mechanical and environmental resistance of joints. ...

Description

This lecture covers mechanical joining techniques, focusing on fasteners and integral joints. Fasteners like screws, rivets, and clips offer advantages in reliability and ease of disassembly, but may have limitations in strength and long-term durability. Integral joints, such as snap fits and press fits, provide alternatives for assembling dissimilar materials without tools, with considerations for stress distribution and process limitations. The lecture also explores specific types of fasteners, like molded-in inserts and eyelets, as well as hinge design considerations and the use of Velcro in various applications.

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Ontological neighbourhood

Chemical engineering

Materials science: Deformation of materials

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The field of strength of materials (also called mechanics of materials) typically refers to various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts. The methods employed to predict the response of a structure under loading and its susceptibility to various failure modes takes into account the properties of the materials such as its yield strength, ultimate strength, Young's modulus, and Poisson's ratio.

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Material is a substance or mixture of substances that constitutes an object. Materials can be pure or impure, living or non-living matter. Materials can be classified on the basis of their physical and chemical properties, or on their geological origin or biological function. Materials science is the study of materials, their properties and their applications. Raw materials can be processed in different ways to influence their properties, by purification, shaping or the introduction of other materials.

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Materials science is an interdisciplinary field of researching and discovering materials. Materials engineering is an engineering field of finding uses for materials in other fields and industries. The intellectual origins of materials science stem from the Age of Enlightenment, when researchers began to use analytical thinking from chemistry, physics, and engineering to understand ancient, phenomenological observations in metallurgy and mineralogy. Materials science still incorporates elements of physics, chemistry, and engineering.

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Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptability, plus a wide range of other properties, such as being lightweight, durable, flexible, and inexpensive to produce, has led to its widespread use. Plastics typically are made through human industrial systems.

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