Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: fracture process zone

Sortuj według:

Ogranicz wyniki do:

Wyznaczenie efektywnej strefy zmęczeniowej dla elementów z karbem

Krzyżak D.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

2015

z. 105

105-108

The work presents a methodology of determination of fracture process zone by use of effective length. In this work, the results of experimental tests of 40 HM-T steel were used. Tests were done for smooth and notched specimens with a radius of 0.5 mm and 1 mm. In the calculation, multi-linear hardening model and cyclic material properties were applied. Research indicated that the effective length depends on the notch geometry and loading level.

Experimental investigations of strain localization in concrete using Digital Image Correlation (DIC) technique

Kozicki J., Tejchman J.

Archives of Hydro-Engineering and Environmental Mechanics

2007

Vol. 54, nr 1

3-24

The paper presents results of experimental investigations of strain localization in concrete using a non-destructive method called Digital Image Correlation (DIC) technique. This technique measures surface displacements from digital images. The model tests were carried out with notched concrete specimens under three-point bending. Three different beam sizes and two different concrete mixes were used. During experiments, load--deflection curves and evolution of fracture process zone were determined. The measured size effect in strength was compared with the deterministic size effect law by Bazant (1984) and experimental results by Le Bellégo et al (2003).

Exploitation and applicating research on surveying system of pyromagnetic effect during rupture process of PVC sheet with defects

Luo Y. S., Su J. X., Deng X. H., Chen W.

International Journal of Applied Mechanics and Engineering

2003

Vol. 8, no spec.

277-282

The paper introduces the exploitation of a surveying system which automatically follows the peak value of pyromagnetic effect, including the hardware of a single chip processor, a set of servo-mechanism etc., and the system software of data collecting program, data handler etc. Using it, breaking tension test under various strain-rate on PVC sheet samples with distributed micro-bores is conducted. The magnetic induction sensor automatically follows the peak value of magnetic induction density. The experimental results show that the exploitation of the surveying system is successful. During the rapture process of rheological material PVC sheet with defects, owing to the existence of internal temperature gradient leads to the occurrence of pyromagnetic effect in the fracture process zone at crack tip.