Some comments on the Arcan mixed-mode (I/II) test specimen

Greer, James M.; Dorman, Sarah E. Galyon; Hammond, Matthew J.

doi:10.1016/j.engfracmech.2011.03.017

Cited by 28 publications

(12 citation statements)

References 10 publications

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“…LOCTITE Ò E-40HT™ Hysol Ò Epoxy Structural Adhesive (Henkel, USA) was applied between the copper bars and the steel blocks of the Arcan specimen with a room-temperature curing time of 24 h, as recommended by the manufacturer to achieve more than 80% of its strength. Care was taken to apply a uniform pressure during cure so that the adhesive layer was of constant thickness to avoid out-of-plane bending as reported in [26]. Handling and mounting procedures were designed to prevent damage to the solder joint before fracture testing.…”

Section: Specimen Design and Preparationmentioning

confidence: 99%

Comparison of solder joint fracture behavior in Arcan and DCB specimens

Nourani

Akbari

Spelt

2015

Engineering Fracture Mechanics

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Section: Specimen Design and Preparationmentioning

confidence: 99%

Comparison of solder joint fracture behavior in Arcan and DCB specimens

Nourani

Akbari

Spelt

2015

Engineering Fracture Mechanics

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“…A modified version of Arcan specimen has been made for the mixedmode fracture test of adhesively bonded joints, which allows pure mode-I, pure mode-II, and almost any combination of mode-I and mode-II loading to be tested using the same test specimen configuration by Arcan et al (1978) and several studies have been done using Arcan specimen like Ayatollahi and Sedighiani (2012), Cognard et al (2008), Nikbakht and Choupani (2009), Heydari et al (2011). However, modified Arcan fixture has several problems which limit its usefulness (Greer Jr et al 2011, Pucillo et al 2011, Song and Huh 2011. One of the most important problems is the specimen-fixture connection which causes bending or unwanted third mode loading conditions ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

3D Characterization of Mixed-Mode Fracture Toughness of Materials Using a New Loading Device

Oskui

Choupani

Shameli

2016

Lat. Am. j. solids struct.

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In this paper, a new loading device was employed to conduct a mixed-mode fracture test. Therefore, disadvantages detected in the previous mixed-mode fracture toughness test methods can be avoided. The new fixture has perfect symmetry which provides a uniform stress state, creates the pure plane strain conditions and eliminates the unwanted mode-III loading conditions. The values of non-dimensional stress intensity factors for pure mode-I, pure mode-II, and pure mode-III were obtained using 3D models of new loading device and modified Arcan method in order to compare the results and investigate the variation of fracture parameters. Furthermore, the values of correction factors for pure mode-III in various loading angles were studied for both fixtures and it was resulted that in modified Arcan device there was a larger contribution of unwanted third mode loading conditions and therefore the values of mode-I and mode-II non-dimensional stress intensity factors were affected. In the present study, in order to compare the results, the fracture toughness values of ABS (Acrylonitrile butadiene styrene) polymeric material were determined experimentally for both fixtures and a full range of mixed-mode loading conditions including pure mode-I and pure mode-II loading were created and tested. The differences in critical stress intensity factors of the fixtures were found about 7.00% and 42.65% in mode-I and mode-II loading conditions, respectively. ness for three modes of loading (I, II and III) and also under mixed-mode loading conditions. Some of these methods include: the double cantilever beam (DCB) and the end notched flexure (ENF) specimens have been employed for mode-I and mode II tests, respectively (Davidson et al. 2012, Shokrieh and Heidari 2011, Zacharopoulos 2004. A crack rail shear (CRS) specimen has been proposed to determine the mode-III (tearing) critical strain energy release rate by Becht and Jr (1988). The mixed-mode bending (MMB) test has been proposed by combining the schemes used for DCB and ENF tests, which can produce a wide range of the ratios of mode-I and mode-II components by varying the lever arm of the specimen. A modified MMB test method was used for evaluation of the interlaminar fracture toughness of AS4/PEEK composite material by Reeder (1990), Reeder and Crews (1990). Furthermore, MMB test method was recently used for investigation of crack propagation in adhesively bonded joints by Ben Salem et al. (2014). Researchers like Verma et al. (1995) and Dharmawan et al. (2006) evaluated the fracture toughness of composite materials by using DCB, ENF and MMB specimens. However, for all these test methods there are problems in that a wide range of mixed-mode ratios cannot be tested which limits their usefulness (Reeder and Crews 1990). But in order to obtain reliable results for interlaminar fracture toughness for pure mode-I, pure mode-II, and mixed-mode loading conditions, different beam type specimens would be required. It is therefore necessary to develop other test methods to eval...

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“…One cause of the inconsistency in the results was determined to be the three pin loading configuration used by the authors. It was suggested that future studies use only one pin for fixing the Arcan fixture to the test stand [7]; the use of a single pin is consistent with the work of Amstutz, Boone and others at the University of South Carolina [8,9,10].…”

Section: Introductionmentioning

confidence: 79%

“…Now consider the case where a crack is under mixed-mode loading, that is, under any combination of two or more loading types. For the combination of Mode I and Mode II loading conditions, methods for obtaining a mixed-mode I/II stress state experimentally when applying uniaxial tensile loading include (a) use of kinked cracks, (b) use of cracks propagating away from a hole, and (c) use of an Arcan fixture [6][7][8][9][10][11][12][13][14][15]. Independent mixed mode loading studies by both Zhang et al [21] and Lopez-Crespo et al [22] have used an Arcan fixture to statically load an existing crack for conditions in which an empirical solution for the stress intensity factor (SIF) exits [23].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Predicted Crack Paths for Al-2024-T351 Under Mixed-Mode I/II Fatigue

Miller

Sutton

Deng

et al. 2014

Fracture, Fatigue, Failure, and Damage Evolution, Volume 5

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The aerospace industry has experience with a range of structural failures, oftentimes due to fatigue cracks in aircraft fuselage components that are exposed to relatively high stress levels during cyclic loading effects that lead to fatigue crack initiation at material defects and near stress concentrations. These aircraft components are under complex stress states. In this study, mixed mode I/II fatigue experiments and simulations are performed for an Arcan fixture and a 6.35 mm thick Al-2024-T351 specimen, a popular aerospace alloy. Experiments were performed for Arcan loading angles that gave rise to a range of Mode I/II crack tip conditions from 0 Ä KII/KI Ä 1. Measurements include the crack paths, loading cycles, and maximum and minimum loads for each loading angle. Simulations were performed using three-dimensional finite element analysis (3D-FEA) with 10-noded tetrahedral elements via the custom in-house FEA code, CRACK3D. While modeling the entire fixture-specimen geometry, a modified version of the virtual crack closure technique (VCCT) with automatic crack tip re-meshing and a maximum circumferential stress criterion was used to predict the direction of crack growth. Results indicate excellent agreement between experiments and simulations for the measured crack paths during the first several millimeters of crack extension.

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Some comments on the Arcan mixed-mode (I/II) test specimen

Cited by 28 publications

References 10 publications

Comparison of solder joint fracture behavior in Arcan and DCB specimens

Comparison of solder joint fracture behavior in Arcan and DCB specimens

3D Characterization of Mixed-Mode Fracture Toughness of Materials Using a New Loading Device

Experimental and Predicted Crack Paths for Al-2024-T351 Under Mixed-Mode I/II Fatigue

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