, this paper characterizes the failure of a polymeric clamp hanger component using finite element analysis coupled with experimental methods such as scanning electron microscopy; X-ray computed tomography, and mechanical testing. Using Fourier transform infrared spec- troscopy, the material was identified as polypropylene. Inter- nal porosity that arose from the manufacturing procedure was determined using three dimensional X-ray computed tomography. From static mechanical experiments, the forces applied on the component were determined and used in a finite element simulation, which clearly showed the process of frac- ture arising from the pre-existing processing pores. The frac- ture surfaces were observed under a scanning electron microscope confirming the finite element simulation results illustrating that low-cycle fatigue fracture occurred in which the fatigue cracks nucleated from the manufacturing porosity.