The phrase "a material challenge" is correct and usable in written English.
It can be used to describe a significant or substantial difficulty or obstacle in a particular context, such as business, engineering, or personal situations.
Example: "The team faced a material challenge in meeting the project deadline due to unforeseen circumstances."
Alternatives: "a significant challenge" or "a substantial challenge".
Many reasons I guess, but it suggests to me that these pieces, for the artist, were more of a material challenge than a sensual pursuit.
The very-high-temperature reactor (VHTR) is a promising Generation-IV reactor design given its clear advantage regarding the production of massive amounts of hydrogen and in generating highly efficient electricity despite the fact that a material challenge remains at a high temperature of around 950 °C, where hydrogen production is possible under high pressure.
However, the vast variety of surface treatment compounds available makes the selection of an adequate material challenging.
The formulation of corrosion protective coatings is a complex materials challenge involving many design variables.
A number of materials challenges must be successfully resolved for nuclear energy to continue to make further improvements in reliability, safety and economics.
This paper provides a perspective of TES technology with a focus on TES materials challenges using molten salts based phase change materials for medium and high temperature applications.
The measurement of density (or difference in density between the sedimenting species and the suspension) is challenging for a material comprising flocculated and precipitated material and entrapped liquor.
Although cartilage tissue engineering has achieved some success using agarose as a scaffolding material, major challenges of agarose-based cartilage repair, including non-degradability, poor tissue scaffold integration and limited processing capability, have prompted the search for an alternative biomaterial.
These include principally neutronics and materials challenges.
Designing a material from the atomic level to achieve a tailored response in extreme conditions is a grand challenge in materials research.
Given limited funding and an increasing density of published material, a significant challenge facing all MODs is how to efficiently and effectively prioritize the most relevant research papers for detailed curation.
