Bending Work of Laminated Materials Based on Densified Wood and Reinforcing Components

Laminated materials incorporating plastics seem to be especially well suited lor highly stressed aircraft components, by reason of their good strength properties. Paper, fabric and wood veneers treated with plastics on a phenolic basis were tested with regard to their strength, especially in bending, shear, absorbed energy in impact bending, notching strength and in their resistance against moisture. Further, the behaviour of compressed plastics was studied at different temperatures under static and dynamic loads. A part of the research was extended to pure phenol resin and to thermoplastics based on methacrylate and polyvinylchloride. The bonding properties of laminated compressed plastics were established. Concluding, some experiments relating to the practical manufacture of aeroplane components are communicated.

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910 Transient Piezohygrothermoelastic Problem of a Composite Hollow Cylinder Composed of Piezoelectric and Anisotropic Laminated Materials

The Proceedings of Conference of Kansai Branch ◽

10.1299/jsmekansai.2008.83._9-10_ ◽

2008 ◽

Vol 2008.83 (0) ◽

pp. _9-10_

Author(s):

Yoshihiro OOTAO

Keyword(s):

Hollow Cylinder ◽

Laminated Materials

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Graphite Laminated Materials Strength Properties and Energy Characteristics of Polymer Binders

Eurasian Chemico-Technological Journal ◽

10.18321/ectj474 ◽

2017 ◽

Vol 18 (4) ◽

pp. 311

Author(s):

I.M. Karzov ◽

Yu.G. Bogdanova ◽

S.V. Filimonov ◽

O.N. Shornikova ◽

A.P. Malakho

Keyword(s):

Tensile Strength ◽

Stainless Steel ◽

Surface Energy ◽

Sheet Material ◽

Strength Properties ◽

Work Of Adhesion ◽

Silicone Resin ◽

Energy Characteristics ◽

Polymer Binders ◽

Laminated Materials

The approach for graphite laminated materials strength properties prediction using contact angle measurements was proposed. The tensile strength of laminated materials made of graphite foil and stainless steel with acrylic and silicone adhesives was measured. It was shown that tensile strength depends on energy characteristics of polymer binders, which can be determined by simple and express wetting method. It was found that the highest values of tensile strength, strength of adhesion and the work adhesion to graphite and stainless steel were provided by acrylic adhesive MBM-5C. The delamination occurred when graphite and stainless steel sheets were connected with low surface energy silicone resin, γ = 23 mJ/m2,<br />what was not able to maintain sufficient adhesion level to the both types of attached surfaces: polar steel and non-polar graphite. It was demonstrated that the calculation of the work of adhesion to polar and non-polar model liquids (water and octane respectively) can be applied to optimize the choice of polymer binder and design of laminated materials. It’s quite important that the proposed technique doesn’t require to determine free surface energy for each type of sheet material which is especially difficult and complex task if laminate consists of several different layers.

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Mathematical Model of Rotary Machined Helical Surfaces

MATEC Web of Conferences ◽

10.1051/matecconf/202134601038 ◽

2021 ◽

Vol 346 ◽

pp. 01038

Author(s):

Mikhail Popov

Keyword(s):

Mathematical Model ◽

Temperature Decrease ◽

Mathematical Foundation ◽

Rotary Tool ◽

High Durability ◽

High Temperature Alloys ◽

Cutting Zone ◽

Rotary Cutting ◽

Mathematical Calculation ◽

Laminated Materials

The rotary cutting method of materials has a number of advantages over the existing traditional cutting methods, e.g. temperature decrease in the cutting zone, also noncumulative blade wear. Due to its high durability, the rotary tool allows processing hardened and difficult-to-machine materials, high-temperature alloys, as well as composite and laminated materials. However, this machining method is usually not applied for machining various shaped surfaces, which is mainly due to the lack of mathematical calculation of the resulting profiles, and the absence of a wide variety of methods for rotary tools installation. The article discusses the mathematical foundation of the resulting profile when processing helical surfaces when processing the flanks of rotary tools.

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