Behaviour of a pipe containing a semi-elliptical crack subjected to internal pressure.

• Autorzy: Boukharouba Taufik

Warianty tytułu

PL

Zachowanie się rury z półeliptycznym pęknięciem poddanej działaniu ciśnienia wewnętrznego.

• Języki publikacji: EN

Abstrakty

EN

The fatigue propagation of a semi-elliptical crack in a pipe subjected to internal pressure is always an open question although a number of numerical works. Crack front evolution is generally preducted by empirical relationships. This fatigue propagation in the case of pipe subjected to an internal pressure have been obtained using a special device allowed to produce an internal pressure up to 700 bars. Crack aspect ratio evolution is similar to those of a crack in plate subjected to tension.

PL

Problem propagacji zmęczeniowej półeliptycznego pęknięcia na powierzchni rury poddanej wewnętrznemu ciśnieniu jest wciąż kwestią otwartą, momo że istnieje wiele prac poświęconych analizie numerycznej tego zjawiska. Do prognozowania przebiegu ewolucji krawędzi pęknięcia stosowane są zwykle zależności empiryczne. W przedstawionej pracy, ewolucję pęknięcia zmęczeniowego na powierzchni rury poddanej wewnętrznemu ciśnieniu badano przy użyciu specjalnego urządzenia, pozwalającego wytwarzać ciśnienie do 700 barów. Obserwowana ewolucja współczynnika kształtu pęknięcia jest podobna do tej, jaka występuje w przypadku pęknięć płyty pod działaniem sił rozciągających.

Słowa kluczowe

EN

pipe; semi-elliptical crack; internal pressure; fatigue propagation

PL

rura; pęknięcie półeliptyczne; ciśnienie wewnętrzne; propagacja zmęczeniowa

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 1999
• Tom: Vol. XLVI, nr 2
• Strony: 125--138

Twórcy

autor

Boukharouba Taufik

• Laboratoire de Fiabilité Mécanique et des Matériaux de l'IGM, Université des Sciences et de la Technologie Houari Boumediene, Alger - Algérie

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