... A full-scale fatigue test was conducted by the National Research Council (NRC) on an inboard wing leading-edge flap (ILEF) of a CF-188 fighter. The objective was to determine whether the service life of this component could be extended after a midlife structural modification was performed...

... (FEM) and then statically load tested and fatigue tested to simulate typical oil field conditions. Various properties, including hardness, were documented along with the microstructure. Corrosion testing was also performed to compare the critical pitting temperature of the Alloy 625 AM material...

... are discussed in this paper. bearing steel quality fatigue testing inclusions continuous casting improvement BEARING STEEL TECHNOLOGIES: 12TH VOLUME 381 STP 1623, 2020 / available online at www.astm.org / doi: 10.1520/STP162320190060 Xiaohong Xu,1 Jigang Liu,1 Guoqing Xu,1 Qing Yin,1 Xudong Zhang...

...) that is based on a life prediction using a Bayesian framework. The framework uses distributions for bending fatigue strength, patient age, patient activity level, and in vivo bending. The benchtop fatigue testing portion of the standard is based on the unsupported bending of the lead at multiple alternating...

... new stents. This paper reports recent methods for use of bench testing as a tool to predict fatigue fracture of stents for complex multimode duty cycles. fatigue testing stent fracture fatigue fractures bench testing Scott Anderson1 Reprinted from JAI, Vol. 6, No. 6 doi:10.1520/JAI101879...

... Standard Test Method for Measurement of Fatigue Crack Growth Rates, E 647, provides guidance that is useful to this test, the specialized nature of spectrum testing does provide its own unique set of issues different from da/dN versus ΔK testing. fatigue testing crack growth testing variable...

... crack growth fatigue testing uncertainty analysis V. McDonald, JF. 1 and S. R. Daniewicz 1 An Experimental Study of the Growth of Surface Flaws Under Cyclic Loading REFERENCE: McDonald, V., Jr., and Daniewicz, S. R., "An Experimental Study of the Growth of Surface Flaws under Cyclic Loading...

... An automated data acquisition system has been developed that can be used as an independent watchdog to monitor the loads applied during a fatigue test. An algorithm to perform peak-picking based on a quadratic least squares approach has been shown to yield peak/valley magnitudes to within 1...

..., which correlates very well with the experimental results. Metallographic and fractographic examinations have also been performed on the fretted specimens. fretting fatigue fatigue testing fretting device contact stresses Bettina U. Wittkowsky,~Paul R. Birch,2 Jaime Dominguez,3 and Subra...

... Fatigue testing of high strength, low-alloy steel fasteners has been completed with simultaneous unidirectional bending and axial loads that demonstrates a potentially beneficial effect on fatigue life by accounting for bending. Fatigue tests were performed in load control on fasteners...

... Creep-rupture and fatigue tests were conducted to identify the failure modes and degradation mechanisms of a [0/90] carbon fiber reinforced silicon carbide (C/SiC) composite at 550 and 650°C. When compared on a maximum stress versus time to failure basis at a given temperature, fatigue testing...

... cycles as well as delamination length as a function of the number of cycles. composite materials fatigue testing design bond strength skin/flange interface secondary bonding Michael K. Cvitkovich, 1 T. Kevin O'Brien, 2 and Pierre J. Minguet 3 Fatigue Debonding Characterization in Composite...

.... The evolution of steelmaking practices over the past twenty years has also given rise to more discriminating test and evaluation methods. The types of testing reviewed here include microscopic examination, oxygen analysis, and various types of fatigue testing. Further improvements in steelmaking technology...

... reviewed. The three-rail shear test was chosen for its ability to produce both strength and modulus values in both static and fatigue testing, as well as for producing a large uniform region of pure shear away from the free edges. The disadvantages of this test method include free edge effects, which cause...

...-controlled loading under room temperature dry conditions. composite materials laminated composites delamination fatigue testing interlaminar fracture toughness mixed-mode strain energy release rate P. Sriram, l y. Khourchid,~ S. J. Hooper, t and R. H. Martin 2 Experimental Development...

... of tests performed on high strength-low alloy structural steel used for highway bridge construction are presented to demonstrate the capabilities of the system. crack growth fatigue crack growth variable amplitude loading crack growth test system fatigue testing servohydraulic test system...

... and discussed. These discussions will lead to a final point regarding the role of statistical methods in augmenting engineering judgment and experience. crack growth crack propagation maximum likelihood Paris law fatigue testing test automation fracture (materials) fatigue (materials) testing...

.... composite materials laminated composites delamination fatigue testing interlaminar fracture toughness mixed-mode strain energy release rate P. Sriram, 1 Y. Khourchid, 1 and S. J. Hoopet J The Effect of Mixed-Mode Loading on Delamination Fracture Toughness REFERENCE: Sriram, P., Khourchid, Y...

... Fretting fatigue testing usually arises as the result of some failure which it is imperative to overcome either by a modified design or application of some surface treatment. In such cases the test rig is usually designed to replicate the actual situation as closely as possible (e.g., a press...

... is proposed and discussed. corrosion fatigue fatigue testing crack initiation crack propagation steel welded steel variable amplitude polarization William H. Hartt ~ Corrosion Fatigue Testing of Steels as Applicable to Offshore Structures REFERENCE: Hartt, W. H., "Corrosion Fatigue Testing...