Understanding Materials

Autor/in	Katsioloudis, Petros J.
Titel	Understanding Materials
Quelle	In: Technology Teacher, 69 (2010) 8, S.5-11 (7 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0746-3537
Schlagwörter	Testing; Metallurgy; Technology; Plastics; Ceramics; Engineering; Manufacturing Industry + Suchen Sie Ihr Suchwort? Testdurchführung; Testen; Hüttenwesen; Technologie; Plastisches Material; Keramik; Maschinenbau; Fertigungswirtschaft; Produzierendes Gewerbe
Abstract	Almost everything people have ever done has involved materials. Historical evidence indicates that "engineered materials" have been available and utilized for the benefit of humankind since the Neolithic period, beginning about 10,000 BC. Some of these materials have been in existence for thousands of years. At first, materials consisted of wood, stone, ceramic clays, and meteoric metals and ores, simply shaped into useful objects. Later, copper metallurgy was developed in Asia Minor, followed by the Iron Age promoted by the Romans for their military and civil needs. From the Roman times to today, materials have undergone continuing evolution, with considerable improvement. Today's engineered materials are commonly divided into categories based on their physical and chemical characteristics. Included in those categories are: (1) metals; (2) ceramics; (3) polymers; and (4) composites. Before selecting a material for different applications, it is essential to understand the characteristics of the material. One way to identify material properties is by testing. Different types of materials testing include Rockwell and Brinell hardness testing, compression testing, shear testing, modulus of elasticity, and tensile testing. This article provides a brief description of the tests and procedures. (Contains 4 figures.) (ERIC).
Anmerkungen	International Technology Education Association (ITEA). 1914 Association Drive Suite 201, Reston, VA 20191-1539. Tel: 703-860-2100; Fax: 703-860-0353; e-mail: itea@iteaconnect.org; Web site: http://www.iteaconnect.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10