The quasi-static tensile damage behavior of one type of layer-to-layer 3-Dimensional Angle-interlock Woven Composite (3DAWC) was tested and analyzed in this paper. Incorporated with the acoustic emission (AE) events monitoring, the mechanical behavior of the 3DAWC under tensile loading condition was characterized. The Load-Extension curve, Load/AE events-Time curves occurred during the entire testing process and tensile damage modes were recorded to characterize and summarize the mechanical properties and damage mechanism of the 3DAWC subjected to tensile loading. It was found that the tensile damage of the 3DAWC could be summarized into 3 steps. And each step has a distinct primary damage mode. Moreover, the resin cracks, resin-yarn interface debonding and yarn breakages were the main damage modes for the 3DAWC.
 Mouritz, A.P., Bannisterb, M.K., Falzonb, P.J., Leongb, K.H. (1999). Review of applications for advanced three-dimensional fibre textile composites. Composites Part A, 30(12),1445-1461.
 Chen, X., Spola, M., Paya, J.G., Sellabona, P.M.(1999). Experimental studies on the structure and mechanical properties of multi-layer and angle-interlock woven structures. Journal of the Textile Institute, 90(1),91-99.
 Chen, X., Potiyaraj, P. (1999).CAD/CAM of orthogonal and angle-interlock woven structures for industrial applications, Textile Research Journal, 69(9),648-655.
 Sheng, S.Z., Hoa, S.V. (2003). Modeling of 3D angle interlockwoven fabric composites. Journal of Thermoplastic Composite Materials, Journal of Thermoplastic Composite Materials, 16(1),45-58.
 Sun, B.Z., Gu, B.H. (2007).Frequency analysis of stress waves in testing 3-D angle-interlock woven composite at high strain rates, Journal of Composite Materials, 41(24),2915-2938.
 Lapeyronnie, P. Grognec, P.L., Binétruy, C., Boussu, F. (2011).Homogenization of the elastic behavior of a layer-to-layer angle-interlock composite. Composite Structures, 93(11),2795-2807.
 Dong, W.F., Xiao, J., Li, Y. (2011).Finite element analysis of the tensile properties of 2.5D braided composites. Materials Science and Engineering A, 457(1-2),199-204.
 Tan, P., Tong, L.Y., Steven, G.P. (1999).Micromechanics models for mechanical and thermomechanical properties of 3D through-the-thickness angle interlock woven composites. Composites: Part A, 30(5),637-648.
 Nehme, S., Hallal, A., Fardoun, F., Younes, R., Hagege, B., Aboura, Z., Benzeggagh, M., Chehade, F.H. (2011). Numerical/analytical methods to evaluate the mechanical behavior of interlock composites. Journal of Composite Materials, 45(16),1699-1716.
 Hallal, A., Younes, R., Nehme, S., Fardoun, F. (2011).A corrective function for the estimation of the longitudinal Young’s modulus in a developed analytical model for 2.5Dwoven composites. Journal of Composite Materials,45(17),1793-1804.
 Cui, F., Sun, B.Z., Gu, B.H. (2010).Fiber inclination model for finite element analysis of three-dimensional angle interlock woven composite under ballistic penetration. Journal of Composite Materials, 45(14),1499-1509.
 Li, Z.J., Sun, B.Z., Gu, B.H., (2010).FEM simulation of 3D angle-interlock woven composite under ballistic impact from unit cell approach. Computational Materials Science, 49(1),171-183.
 Tang, Y.Y., Sun, B.Z., Gu, B.H. (2010). Impact damage of 3D cellular woven composite from unit-cell level analysis. International Journal of Damage Mechanics, 20(3),323-346.
 Tsai, K.H., Chiu, C.H., Wu, T.H. (2000).Fatigue behavior of 3D multi-layer angle interlock woven composite plates. Composites Science and Technology, 60(2),241-248.
 Gowayed, Y., Fan, H. (2001).Fatigue behavior of textile composite materials subjected to tension-tension loads. Polymer Composites, 22(6),762-769.
 Jin, L.M., Sun, B.Z., Gu, B.H. (2012).Three-point bending fatigue behavior of 3D angle-interlock woven composite. Journal of Composite Materials, 46 (8),883-894.
 Jin, L.M., Niu, Z.L., Jin, B.C., Sun, B.Z., Gu, B.H. (2012). Comparisons of static bending and fatigue damage between 3D angle-interlock and 3D orthogonal woven composites. Journal of Reinforced Plastics and Composites, 31 (14),935-945.