Composite Material Shear Property Measurement Using the Iosipescu Specimen

Pollution from plastic materials has become a severe problem all around the world. Plastics, due to their long lasting properties are utilized majorly in almost every application from packaging, electrical appliances, vehicle parts etc. the major concern related to plastics are that they are non-degradable and hence are harmful for environment. Several researches have been done in utilizing plastic material in addition with some other materials to form a composite material which has better properties than pure substances. Plastics with glass fibres are one such of composition where the new material formed can be used for several day to day applications. Hence the present work focuses on, manufacturing of a composite material from recycled glass fibres and recycled polypropylene co-polymers (PPCP) in varying ratios. A total of six specimens are made and results for Heat deflection temperature (HDT) 70:30 has the best results compared to other compositions. Results are also calculated for shear strength for the same composition of specimen, which shows better results compared to wood material (plywood). This experiment provides a solution for utilizing the waste plastic material found in waste lands and scrapyards which continuously pollute the environment.

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Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100087161 ◽

1991 ◽

Vol 49 ◽

pp. 570-571

Author(s):

E. Sukedai ◽

H. Mabuchi ◽

H. Hashimoto ◽

Y. Nakayama

Keyword(s):

Mechanical Properties ◽

Image Processing ◽

Composite Material ◽

Intermetallic Compound ◽

Side Surface ◽

High Resolution Electron Microscopy ◽

Hexagonal Structure ◽

Second Phase ◽

Resolution Electron ◽

Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

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The microstructure of a TiB2/Ti-47 Al composite material

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155347 ◽

1989 ◽

Vol 47 ◽

pp. 674-675

Author(s):

O. Popoola ◽

A.H. Heuer ◽

P. Pirouz

Keyword(s):

Composite Material ◽

Ion Beam ◽

Chemical Properties ◽

Intermetallic Alloys ◽

Transmission Electron ◽

Diamond Polishing ◽

Al Composite ◽

The Matrix ◽

Argon Ion ◽

And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.

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Application of pyrometer and standard sample to determine surface temperature of studied materials

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2019-12-9-13 ◽

2019 ◽

pp. 9-13

Author(s):

V.Ya. Mendeleyev ◽

V.A. Petrov ◽

A.V. Yashin ◽

A.I. Vangonen ◽

O.K. Taganov

Keyword(s):

Composite Material ◽

Surface Temperature ◽

Relative Error ◽

Wavelength Range ◽

Standard Sample ◽

A Priori ◽

Temperature Changes ◽

Surface Temperatures ◽

Relative Errors ◽

Normal Emissivity

Determining the surface temperature of materials with unknown emissivity is studied. A method for determining the surface temperature using a standard sample of average spectral normal emissivity in the wavelength range of 1,65–1,80 μm and an industrially produced Metis M322 pyrometer operating in the same wavelength range. The surface temperature of studied samples of the composite material and platinum was determined experimentally from the temperature of a standard sample located on the studied surfaces. The relative error in determining the surface temperature of the studied materials, introduced by the proposed method, was calculated taking into account the temperatures of the platinum and the composite material, determined from the temperature of the standard sample located on the studied surfaces, and from the temperature of the studied surfaces in the absence of the standard sample. The relative errors thus obtained did not exceed 1,7 % for the composite material and 0,5% for the platinum at surface temperatures of about 973 K. It was also found that: the inaccuracy of a priori data on the emissivity of the standard sample in the range (–0,01; 0,01) relative to the average emissivity increases the relative error in determining the temperature of the composite material by 0,68 %, and the installation of a standard sample on the studied materials leads to temperature changes on the periphery of the surface not exceeding 0,47 % for composite material and 0,05 % for platinum.

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