Electronic Journal of Differential Equations, Vol. 2004(2004), No. 55, pp. 1-19. Title: Homogenization and uniform stabilization for a nonlinear hyperbolic equation in domains with holes of small capacity Authors: Marcelo M. Cavalcanti (Univ. Estadual de Maringa, Brasil) Valeria N. Domingos Cavalcanti (Univ. Estadual de Maringa, Brasil) Juan A. Soriano (Univ. Estadual de Maringa, Brasil) Joel S. Souza (Univ. Federal de Santa Catarina, Brasil) Abstract: In this article we study the homogenization and uniform decay of the nonlinear hyperbolic equation $$ \partial_{tt} u_{\varepsilon} -\Delta u_{\varepsilon} +F(x,t,\partial_t u_{\varepsilon},\nabla u_{\varepsilon})=0 \quad\hbox{in }\Omega_{\varepsilon}\times(0,+\infty) $$ where $\Omega_{\varepsilon}$ is a domain containing holes with small capacity (i. e. the holes are smaller than a critical size). The homogenization's proofs are based on the abstract framework introduced by Cioranescu and Murat [8] for the study of homogenization of elliptic problems. Moreover, uniform decay rates are obtained by considering the perturbed energy method developed by Haraux and Zuazua [10]. Submitted September 23, 2003. Published April 9, 2004. Math Subject Classifications: 35B27, 35B40, 35L05 Key Words: Homogenization; asymptotic stability; wave equation.