Environmentally controlled fatigue tests of box beams with built-in flaws

1977 ◽  
Author(s):  
J. LABOR ◽  
R. VERETTE
Keyword(s):  
Fatigue Tests ◽  
Box Beams

Environmentally Controlled Fatigue Tests of Composite Box Beams with Built-in Flaws

1978 ◽  
Vol 15 (5) ◽  
pp. 257-263 ◽  
Author(s):  
J. D. Labor ◽  
R. M. Verette
Keyword(s):  
Fatigue Tests ◽  
Box Beams

PRECAST, PRESTRESSED BOX BEAMS - A STATE-OF-THE-ART REPORT

PCI Journal ◽  
1969 ◽  
Vol 14 (1) ◽  
Author(s):  
Brice F. Bender ◽  
William G. Kriesel
Keyword(s):  
State Of The Art ◽  
Box Beams

Flexural behavior of precast concrete box beams posttensioned with unbonded, carbon-fibercomposite cables

PCI Journal ◽  
2008 ◽  
Vol 53 (4) ◽  
pp. 62-82 ◽  
Author(s):  
Nabil Grace ◽  
Tsuyoshi Enomoto ◽  
Ahmed Abdel-Mohti ◽  
Yahia Tokal ◽  
Sreejith Puravankara
Keyword(s):  
Precast Concrete ◽  
Flexural Behavior ◽  
Box Beams

Fatigue Tests on Prestressed Concrete Beams Made With Debonded Strands

PCI Journal ◽  
1994 ◽  
Vol 39 (6) ◽  
pp. 70-88
Author(s):  
Bruce W. Russell ◽  
Ned H. Burns
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Fatigue Tests

HIGH SPEED FATIGUE TESTS on SMALL SPECIMENS of PLAIN

PCI Journal ◽  
1959 ◽  
Vol 4 (2) ◽  
pp. 53-70 ◽  
Author(s):  
BASIL M. ASSIMACOPOULOS ◽  
ROBERT F. WARNER ◽  
CARL E. EKBERG, JR.
Keyword(s):  
High Speed ◽  
Fatigue Tests

Flexural Response of CFRP Prestressed Concrete Box Beams for Highway Bridges

PCI Journal ◽  
2004 ◽  
Vol 49 (1) ◽  
pp. 92-104 ◽  
Author(s):  
Nabil F. Grace ◽  
S. B. Singh ◽  
Mina M. Shinouda ◽  
Sunup S. Mathew
Keyword(s):  
Prestressed Concrete ◽  
Highway Bridges ◽  
Flexural Response ◽  
Box Beams

Four Point Bending Fatigue Tests of Forged Ti 6Al 4V

2009 ◽  
Vol 51 (9) ◽  
pp. 580-586 ◽  
Author(s):  
Bernd Oberwinkler ◽  
Martin Riedler ◽  
Heinz Leitner ◽  
Ataollah Javidi
Keyword(s):  
Fatigue Tests ◽  
Bending Fatigue ◽  
Four Point Bending

Low-pressure turbine disc fi rtree slots’ life and reliability enhancement by ultrasonic surface hardening

2020 ◽  
pp. 491-495
Author(s):  
A.M. Tomashevich ◽  
G.G. Shirvan’yants ◽  
D.A. Teryaev
Keyword(s):  
Residual Stress ◽  
Low Pressure ◽  
Fatigue Tests ◽  
Compression Stress ◽  
Cycle Basis ◽  
Low Pressure Turbine ◽  
Working Stress ◽  
Turbine Disc ◽  
Axial Residual Stress ◽  
Reliability Enhancement

The possibility of life and reliability enhancing of AL-31F low pressure turbine disc’s fir-tree slots by ultrasonic hardening is considered. Having disc’s material properties studied, working stress derivation is executed which was further used for following comparative fatigue tests. Also, Davidenkov method residual stress analysis is carried out which showed 95.3 % change to compression stress for circumferential residual stress and 80.9 % change to compression stress for axial residual stress which proves possibility of fir-tree slots’ life and reliability enhancement by ultrasonic hardening. Comparative fatigue tests with N = 4•10 5 cycles basis showed that the hardened samples standing out the cycle basis during higher oscillatory amplitudes (and, thus, affecting loads) than the non-hardened basic ones.

Modeling a random sequence of extremes of loads for fatigue tests under irregular loading

2020 ◽  
pp. 13-19
Author(s):  
N.A. Mahutov ◽  
I.V. Gadolina ◽  
S.G. Lebedinskiy ◽  
E.S. Oganyan ◽  
A.A. Bautin
Keyword(s):  
Random Sequence ◽  
Fatigue Tests ◽  
Linear Hypothesis ◽  
Resource Estimation ◽  
Transition Matrices ◽  
Random Loading ◽  
Markov Transition ◽  
Random Nature ◽  
Irregular Loading ◽  
Markov Transition Matrices

Methods and approaches to tests under random loading are considered, their role is characterized. To ensure the random nature of loading, a modeling method based on Markov transition matrices and real processes recorded in operation is proposed. Keywords: random loading process, Markov repetition matrices, resource estimation, corrected linear hypothesis, parameter of completeness of the loading spectrum. [email protected]

Sign in / Sign up

Export Citation Format

Share Document