The phrase "a simple material" is correct and usable in written English.
It can be used when referring to a type of material that is uncomplicated or easy to understand or work with.
Example: "For this project, we will use a simple material like cotton to create the prototype."
Alternatives: "an uncomplicated material" or "a basic material".
But a simple material that doesn't need F.D.A. approval is quite another thing.
A simple material can shrink in one direction when heated, and expand in that direction when squeezed by hydrostatic pressure.
Analysis of the mechanical properties of engineering materials with microstructure generally requires modification of the concept of a simple material.
An attempt is made to address this problem using a simple material removal method namely hot cutter machining (HCM).
This table can also be interpreted in dynamic terms, as the possible evolution of transport firms, from a simple material trajectory, towards more complex informational and methodological trajectories.
The motivation behind this work is to design a simple material which exhibit temperature dependent tunable luminescence without doping any expensive rare earth ion.
To bend visible light the wrong way, physicists Henri Lezec, Jennifer Dionne, and Harry Atwater of the California Institute of Technology in Pasadena employed a simpler material.
Finally, a comparison was made between simulations with the shear-modified Gurson model and a simpler material model that does not account for void-induced softening.
"White brick is such a nice simple material," said Mr. Fogarty, a partner in the architectural firm Fogarty Finger, who has incorporated some of that "simple material" into his design for a largely glass condominium tower that is to be built at First Avenue and 51st Street in the next two years.
But Orbitz really shouldn't be thought of as a futuristic fluid, he adds: "There's been a lot of fuss over what is a relatively simple material".
The approach to non-isothermal flow commonly follows the assumption of polymer melts as a thermorheological simple material (Morland and Lee [32]), applying a pseudo time (Crochet and Naghdi [33]).
