The mechanical properties

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  • Most plastic materials are used because they have desirable mechanical properties at an economical cost. For this reason, the mechanical properties may be considered the most important of all the physical and chemical properties of high polymers for most applications. Thus everyone working with such materials needs at least an elementary knowledge of their mechanical behavior and how this behavior can be modified by the numerous structural factors that can be varied in polymers.

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  • The skin plays an important role in maintaining the integrity of the living organism while allowing the interaction of the organism with its environment. To fulfill these functions, mechanical stability is as important as flexibility. The mechanical properties of skin are very diverse depending on the anatomical location, and they evolve throughout life from the fetus to old age. Both genetic and acquired skin diseases modify skin biomechanics, as do intrinsic and photoaging.

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  • The surface treatment by physical method of jute fiber using air plasma was investigated. Fiber was treated by the atmospheric plasma with various conditions of power 50W and different treatment times (from 1 min to 7 min). After treatment, the characteristics of fiber changed remarkably and fiber surface observed by SEM analyze showed a better morphology for adhesion. The result showed that tensile strength and Young’s modulus of jute fiber were slightly improved, however there was a remarkable improvement interface adhesion between fibers and polypropylene (PP) resin.

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  • (BQ) Part 2 book "The mechanical design process" has contents: Concept evaluation and selection, product generation, product evaluation for performance and the effects of variation, wrapping up the design process and supporting the product, properties of 25 materials most commonly used in mechanical design,... and other contents.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: "Changes in the mechanical properties of the respiratory system during the development of interstitial lung edema...

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  • (BQ) Part 1 book "Engineering materials 2" has contents: Metals, metal structures, equilibrium constitution and phase diagrams, case studies in phase diagrams, the driving force for structural change, case studies in phase transformations, the light alloys, ceramics and glasses, the mechanical properties of ceramics,... and other contents.

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  • In this study, a new simple stretch-drawing method was used to modify the structures of the aligned CNT sheets for improving the composite properties. The stretch-drawing of the CNT sheets enhanced the composite properties considerably. The improved properties of the composites originated from straightening of the wavy CNTs and increasing the CNT dense packing in the composites.

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  • There is a vast multitude of materials with strongly differing properties. A copper wire, for instance, can be bent easily into a new shape, whereas a rubber band will snap back to its initial form after deformation, while the attempt to bend a glass tube ends with fracture of the tube. The strongly differing properties are reflected in the application of engineering materials – you would neither want to build cars of glass nor rubber bridges. The multitude of materials enables the engineer to select the best-suited one for any particular component.

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  • Fiber composite technology is based on taking advantage of the high strength and high stiffness of fibers, which are combined with matrix materials of similar/ dissimilar natures in various ways, creating inevitable interfaces. In fiber composites, both the fiber and the matrix retain their original physical and chemical identities, yet together they produce a combination of mechanical properties that cannot be achieved with either of the constituents acting alone, due to the presence of an interface between these two constituents.

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  • Tham khảo sách 'engineering fundamentals of the internal combustion engine', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Previously, many of the unenlightened manufacturing companies, having purchased an expensive and sophisticated new machine tool, considered cutting tool technology as very much an afterthought and supplied little financial support, or technical expertise to purchase these tools. Today, tooling-related technologies are treated extremely seriously, as it is here that optimum production output, consistency of machined product and value-added activities are realised.

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  • Tham khảo sách 'mechanical properties of polymers and composites nielsen 2012', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo sách 'mechanics and analysis of composite materialsvalery v, vasiliev & evgeny', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • It is a natural, nor can it be deemed an illaudable curiosity to be desirous of being informed of whatever relates to those who have eminently distinguished themselves for sagacity, parts, learning, or what else may have exalted their characters, and thereby entitled them to a degree of respect superior to the rest of their cotemporaries.

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  • The objective of study was to evaluate some of the physical and mechanical properties of medium density fiberboard (MDF) panels laminated with veneer sheets compressed at different levels of pressure and temperature. Rotary peeled veneer samples of European beech (Fagus orientalis Lipsky) were compressed at temperatures of 150 C, 180 C, and 200 C using 4 MPa and 6 MPa pressure for 8 min. Commercially produced MDF samples also were laminated with such compressed veneer sheets.

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  • Part 2 book "Structure mechanics of woven fabrics" presentation of content: The bending properties of woven fabrics, the shear properties of woven fabrics, fabric complex deformation analysis and simulation, mechanical properties of fabrics with seams, modelling drape deformation of woven fabrics and garments – theory,... Invite you to consult

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  • Various combinations of stitches, tucks, and floats give also different width and length of knit. The goal of this study is to investigate the influence of different knitting structure elements and their position in the knit on deformation properties of plain weft-knitted fabrics.

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  • Tham khảo sách 'the mems handbook mems applications 2nd ed m gad el hak', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Part 1 book "Structure mechanics of woven fabrics" presentation of content: Introduction, objective measurement technology of woven fabrics, structural properties of fabric, the tensile properties of woven fabrics.

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  • In this research, properties of ultrasonic waves transmitted in some carbon steels were investigated. Base on ultrasonic measurements for the steel samples of X40H, S45, SCM420, and SCR420, the values of ultrasonic wave velocities including longitudinal and transverse velocities were determined. These measurements also used to obtain ultrasonic attenuations of these steel samples. Based on ultrasonic velocities, the mechanical properties of these steel samples were calculated including Poisson’s Ratio υ, Young’s modulus E, and Shear modulus G.

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