Composite materials were mainly used in aviation field but today it changes into a general industry. Especially composites are expanding a using on transportation vehicles like automobiles, ships, and aircrafts. The main factor of this expanding is high specific strength. It accord with object requiring high quality and efficient of energy. But manufacturing of element that was made of composite requires many raw materials and high tooling cost for special process, so we needs a reduction of these costs to make best efficient.
In this experiment we contrast strength between VARTM and hand lay-up process. VARTM process offers high quality the same as autoclave products, and applies with low cost like hand lay-up process. So, VARTM process can practically apply for CFRP automobile engine hood.
VARTM process can offer high quality and need low cost. This paper shows that VARTM process is one of the most suitable processes for composite part of automobile.