The functionally graded layers are inhomogeneous along the thickness direction, while the piezoelectric layer is homogeneous;both possess material orthotropy.
Scientific breakthroughs also pushed the country forward, creating new fertilizers, dyes, along with the production of versatile and cheap materials, such as Bakelite and rayon.
This environment encouraged a free interchange of ideas, which led to more creativity with form, function, colour and materials that revolutionised attitudes to furniture design.
The source domain of vehicle is conceptually connected to a number of concepts, such as the following: creation, shape, size, type, structure, constituent materials, function, operation, force, motion.