The main objective of this study is to produce a set of practical equations, by which one could evaluate mixed-mode I/III stress intensity factors by conducting a simple mode I single-edge notch bend specimen test as per ASTM D5054. To establish the proposed equations, a comprehensive finite element analysis is conducted to map the stress intensity factors’ distribution through the thickness of the specimen with the aim of establishing the most effective loading condition for evaluating the mode stress intensity factors. An experimental investigation is also conducted to obtain the ultimate fracture load and establish the fracture mechanism under the mixed-mode loading state. A set of correction factors is also proposed, which accounts for the influence of orientation of the initial crack and the applied load on the stress intensity factors.
ZhuHWuBLiD. Influence of voids on the tensile performance of carbon/epoxy fabric laminates. J Mater Sci Technol2011; 27: 69–73.
2.
WhiteSRHahnHT. Curing cycle optimization for the reduction of processing-induced residual stresses in composite materials. J Compos Mater1993; 27: 1352–1378.
3.
BS 5447. KIC fracture toughness testing. UK: British Standard Institute, 2000.
4.
SureshSTscheggEK. Combined mode I-mode III fracture of fatigue pre-cracked alumina. J Am Ceram Soc1987; 70: 726–733.
5.
XuGBowerAFOrtizM. An analysis of non-planar crack growth under mixed mode loading. Int J Solids Struct1994; 31: 2167–2193.
6.
ManoharanMLewardowskiJJ. Combined mode I-mode III fracture toughness of a particulate reinforced metal-matrix composite. J Compos Mater1991; 25: 831–841.
7.
AndersonTL. Fracture mechanics fundamental and application. 3rd ed.New York: Taylor & Francis, 2005.
8.
ASTM D5054. Standard test methods for plane-strain fracture toughness and strain energy release rate of plastic material. In: Annual book of ASTM standards. West Conshohocken, PA: ASTM, 2007.
9.
SooKKChunBL. The minimum plastic zone radius criterion for crack initiation direction applied to surface crack and through-cracks under mixed mode loading. Int J Fatigue2004; 26: 1169–1178.
10.
BianLCTaheriF. Fatigue fracture criteria and microstructure of magnesium alloy plates. Mat Sci Eng A: Struct2008; 487: 74–85.
11.
BhadauriaSSPathakKKHoraMS. Finite element modeling of crack initiation in mixed-mode (I/II). J Solid Mech2010; 3: 231–247.
12.
ChenZAdamRDDa SilvaFML. Fracture toughness of bulk adhesive in mode I and mode III and curing effect. Int J Fracture2011; 167: 221–234.
13.
LazarusVBuchholzFGFullandM. Comparison of prediction by mode II or mode III criteria on crack front twisting in three or four point bending experiments. Int J Fracture2008; 153: 141–151.
14.
SchollmannMRichardHAKullmerG. A new criterion for the prediction of crack development in multiaxially loaded structure. Int J Fracture2002; 117: 129–141.
15.
LinBMearMEChandarKR. Criterion for initiation of cracks under mixed-mode I + III loading. Int J Fracture2010; 165: 175–188.
16.
ChellGGGrivanE. An experimental technique for fast fracture testing in mixed-mode. Int J Fracture1987; 14: 81–84.
17.
VaradarajanRThurstonAKLewandowskiJJ. Increased toughness of zirconium-based metallic glasses tested under mixed mode conditions. Metall Mater Trans A2010; 41: 149–158.
18.
DavenportJWSmithDJ. A study of superimposed fracture modes I, II and III on PMMA. Fatigue Fract Eng M1993; 16: 1125–1133.
19.
KumarAMHirthJPHoaglandR. A suggested test procedure to measure mixed-mode I-III fracture toughness of brittle material. J Test Eval1994; 22:327–334.
20.
ASTM E399. Standard test method for linear-elastic plane strain fracture toughness KIC of metallic material. In: Annual book of ASTM standards. West Conshohocken, PA: ASTM, 2009.
21.
LiuSChaoYJZhuX. Tensile shear transition in mixed mode I/III fracture. Int J Solids Struct2004; 41: 6147–6172.
22.
AyatollahiMShadlouSShokriehM. Mixed mode brittle fracture in epoxy/multi-walled carbon nanotube nanocomposite. Eng Fract Mech2011; 78: 2620–2632.
23.
ASTM D638. Standard test method for tensile properties of plastic. In: Annual book of ASTM standards. West Conshohocken, PA: ASTM, 2010.
24.
SukumarNMoesNMoranB. Extended finite element method for three-dimensional crack modeling. Int J Numer Meth Eng2000; 48: 1549–1570.
25.
BazantZEstenssoroL. Surface singularity and crack propagation. Int J Solids Struct1979; 15(5): 405–426.
26.
ChaoYJLiuS. On the failure of cracks under mixed-mode loads. Int J Fracture1997; 87: 201–223.
27.
SommerE. Formation of fracture “Lances” in glass. Eng Fract Mech1969; 18: 539–546.
28.
LazarusVLeblondJBMouchrifSE. Crack front rotation and segmentation in mixed mode I + III or I + II + III—part II: comparison with experiments. J Mech Phys Solids2001; 49(7): 1421–1443.
