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http://dbpedia.org/ontology/abstract Als Crazes (engl.: Haarrisse) werden mikroAls Crazes (engl.: Haarrisse) werden mikroskopisch kleine Rissnetzwerke als Vorstufe einer Spannungsrissbildung in amorphen Kunststoffen bezeichnet. In Kunststoffbauteilen, die unter mechanischer Spannung stehen, können sich die Polymerketten regelmäßig ausrichten. Wird die Spannung jedoch zu groß, kann es an den ausgerichteten Stellen zur Bildung von mikrorissartigen Strukturen kommen, die durch Fibrillen verbunden sind. Makroskopisch zeigen sie sich als Muster auf der Oberfläche. Unter Einwirkung von Spannungen und Medien können sie zu größeren Rissen wachsen und schließlich zum Bruch des Bauteiles führen. Crazes lassen sich z. B. sehr gut beim Biegen von transparentem Polystyrol (Kunststofflineal) beobachten, welches durch Lichteinfall gealtert ist oder im Kontakt mit einem spannungsrissauslösenden Medium wie Ethanol stand.srissauslösenden Medium wie Ethanol stand. , Crazing is the phenomenon that produces a Crazing is the phenomenon that produces a network of fine cracks on the surface of a material, for example in a glaze layer. Crazing frequently precedes fracture in some glassy thermoplastic polymers. As it only takes place under tensile stress, the plane of the crazing corresponds to the stress direction. The effect is visibly distinguishable from other types of fine cracking because the crazing region has different refractive indices from surrounding material. Crazing occurs in regions of high hydrostatic tension, or in regions of very localized yielding, which leads to the formation of interpenetrating microvoids and small fibrils. If an applied tensile load is sufficient, these bridges elongate and break, causing the microvoids to grow and coalesce; as microvoids coalesce, cracks begin to form.microvoids coalesce, cracks begin to form. , クレージング(英語: crazing)とは、塗膜や合成樹脂などの部品の表面が日光などにより酸化され、微細なひび割れを発生した状態をいう。
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rdfs:comment Als Crazes (engl.: Haarrisse) werden mikroAls Crazes (engl.: Haarrisse) werden mikroskopisch kleine Rissnetzwerke als Vorstufe einer Spannungsrissbildung in amorphen Kunststoffen bezeichnet. In Kunststoffbauteilen, die unter mechanischer Spannung stehen, können sich die Polymerketten regelmäßig ausrichten. Wird die Spannung jedoch zu groß, kann es an den ausgerichteten Stellen zur Bildung von mikrorissartigen Strukturen kommen, die durch Fibrillen verbunden sind. Makroskopisch zeigen sie sich als Muster auf der Oberfläche. Unter Einwirkung von Spannungen und Medien können sie zu größeren Rissen wachsen und schließlich zum Bruch des Bauteiles führen.chließlich zum Bruch des Bauteiles führen. , クレージング(英語: crazing)とは、塗膜や合成樹脂などの部品の表面が日光などにより酸化され、微細なひび割れを発生した状態をいう。 , Crazing is the phenomenon that produces a Crazing is the phenomenon that produces a network of fine cracks on the surface of a material, for example in a glaze layer. Crazing frequently precedes fracture in some glassy thermoplastic polymers. As it only takes place under tensile stress, the plane of the crazing corresponds to the stress direction. The effect is visibly distinguishable from other types of fine cracking because the crazing region has different refractive indices from surrounding material. Crazing occurs in regions of high hydrostatic tension, or in regions of very localized yielding, which leads to the formation of interpenetrating microvoids and small fibrils. If an applied tensile load is sufficient, these bridges elongate and break, causing the microvoids to grow and coalesce; as microvoids coalesce, cracks beginesce; as microvoids coalesce, cracks begin
rdfs:label Crazing , Crazes , クレージング
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