[IEEE Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) - Bordeaux, France (2010.04.26-2010.04.28)] 2010 11th International Thermal, Mechanical & Multi-Physics Simulation, and Experiments in Microelectronics and Microsystems (EuroSimE) - Limitations of Norris-Landzberg equation and application of damage accumulation based methodology for estimating acceleration factors for Pb free solders