SU634171A1 - Method of evaluating material fracture ductility - Google Patents

Method of evaluating material fracture ductility

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Publication number
SU634171A1
SU634171A1 SU762419581A SU2419581A SU634171A1 SU 634171 A1 SU634171 A1 SU 634171A1 SU 762419581 A SU762419581 A SU 762419581A SU 2419581 A SU2419581 A SU 2419581A SU 634171 A1 SU634171 A1 SU 634171A1
Authority
SU
USSR - Soviet Union
Prior art keywords
crack
loading
load
supports
distance
Prior art date
Application number
SU762419581A
Other languages
Russian (ru)
Inventor
Виктор Иванович Смоленцев
Original Assignee
Предприятие П/Я Г-4361
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Filing date
Publication date
Application filed by Предприятие П/Я Г-4361 filed Critical Предприятие П/Я Г-4361
Priority to SU762419581A priority Critical patent/SU634171A1/en
Application granted granted Critical
Publication of SU634171A1 publication Critical patent/SU634171A1/en

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Claims (1)

6 гружение провод т аналогично исходному нагружвнию. Затем рассто ние между с юрами оп ть увеличивают на указанную величину и вновь повтор ют нагружение. В результате силового вовдействи  трещина, наведенна  из вершины надреза, распростран етс  в образце. Процесс ноИытани  повтор ют до скачка трещины, регистриру  длину трещины, нагрузку и рассто ние между опорами. В зкость разрушени  вычисл ют по известным формулам . Каждое нагружение может заключатьс  в повторном или циклическом силовом воздействии. В случае динамического нагружени  о скачке трещины суд т по изменению роста или по уменьшению отскока ма тника. 14 Формула изобретени Способ оценки в зкости разрущени  материалов, заключающийс  в том, что образец с надрезом и с наведенной из верщины надреза усталостной трешинсЛ устанавливают на две опоры, многократ но нагружают его по схеме трехточечного изгиба до скачка трещины и регистрируют длину трещины и нагрузку, вызывающую ее скачок, по которым суд т о в зкости разрущени  материала, отличающийс  тем, что, с целью повыщеви  точности оценки, перед каждым нагружением рассто ние между, опорами увеличивают на величну, равную 0,5-4,0 толщины образца. Источники информации, прин тые во внимание при экспертизе: 1. Кудр щбв В. Г и др. В зкосоъ разрущени  алюминиевых сплавов. М., Металлурги , 1976, с. 25.6, the loading is carried out similarly to the initial loading. Then the distance between the Jurassics is again increased by the indicated amount and the loading is repeated again. As a result of forceful action, the crack induced from the top of the notch propagates in the specimen. The process of testing is repeated until the crack jumps, registering the crack length, the load, and the distance between the supports. Fracture toughness is calculated using known formulas. Each load may consist in repeated or cyclic force action. In the case of dynamic loading, a crack jump is judged by a change in growth or by a decrease in the tipping of a tang. 14 The invention The method of estimating the fracture toughness of materials, is that a notched specimen with a fatigue cracks made from a notch cut is mounted on two supports, repeatedly load it according to the three-point bend scheme before a crack in the crack and the crack length and the load causing its jump, according to which the fracture toughness of the material is judged, characterized in that, in order to improve the accuracy of the assessment, before each loading the distance between the supports is increased by a value equal to 0.5-4.0 of the thickness of tsa. Sources of information taken into account in the examination: 1. Cuddles V. G et al. On the destruction of aluminum alloys. Moscow, Metallurgists, 1976, p. 25 7 Л Л7 L L Л Л &-УL L & -Y
SU762419581A 1976-11-09 1976-11-09 Method of evaluating material fracture ductility SU634171A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762419581A SU634171A1 (en) 1976-11-09 1976-11-09 Method of evaluating material fracture ductility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762419581A SU634171A1 (en) 1976-11-09 1976-11-09 Method of evaluating material fracture ductility

Publications (1)

Publication Number Publication Date
SU634171A1 true SU634171A1 (en) 1978-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU762419581A SU634171A1 (en) 1976-11-09 1976-11-09 Method of evaluating material fracture ductility

Country Status (1)

Country Link
SU (1) SU634171A1 (en)

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