caa a22 4500 465751113 CHVBK 20180323111834.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF02410246 doi (NATIONALLICENCE)springer-10.1007/BF02410246 Analytical and experimental evaluation of double-notch shear specimens of orthotropic materials [Elektronische Daten] [P. Dadras, J. McDowell] A finite-difference analysis of the state of stress in a double-notch interlaminar shear strength specimen is developed. The effects of geometry and material parameters on the stress distributions are investigated. It has been found that, in agreement with previous determinations,1-7 a uniform distribution of shear stress on the fracture plane does not exist. The shear stress distribution becomes more uniform for increased material anisotropy and for small (L/T) ratios, whereL is the distance between the notches andT is the specimen thickness. Also, it has been determined that the notch size (W) and the distance from the notches to the loaded ends of the specimen (h) do not influence the stress distributions significantly. The effects of variations in the (L/T) ratio, the notch size (W), and the length (h) were investigated experimentally. For a graphite/epoxy laminate of 0/90-deg square wave it has been found that the apparent shear strength determined by double-notch shear tests decreases significantly with an increase in (L/T) ratio. The decrease in the apparent shear strength with an increase inh, however, is very small. Also, the apparent shear strength is not affected significantly by increasing the notch sizeW. Society for Experimental Mechanics, Inc., 1990 Dadras P. Mechanical and Materials Engineering, Wright State University, 45435, Dayton, OH aut McDowell J. Kaiser Aerotech, 880 Doolittle Drive, 94577, San Leandro, CA aut Experimental Mechanics Kluwer Academic Publishers 30/2(1990-06-01), 184-189 0014-4851 30:2<184 1990 30 11340 https://doi.org/10.1007/BF02410246 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02410246 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dadras P. Mechanical and Materials Engineering, Wright State University, 45435, Dayton, OH aut NATIONALLICENCE 700 1- McDowell J. Kaiser Aerotech, 880 Doolittle Drive, 94577, San Leandro, CA aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/2(1990-06-01), 184-189 0014-4851 30:2<184 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer