The phrase "an optimum strength of" is correct and usable in written English.
It can be used in contexts where you are discussing the ideal or most effective level of strength for a material, structure, or system.
Example: "The engineers determined that an optimum strength of 3000 psi was necessary for the concrete used in the construction."
Alternatives: "an ideal strength of" or "a maximum strength of".
The results revealed that optimum strength of 3.5 MPa was mobilised by un-precompressed specimens at 0.75% fiber content.
The optimum strength of the joint is close to that of the base bulk metallic glass (BMG), demonstrating a perfect bonding.
Pre-compression with 10% UCS showed maximum strength of 2.8 MPa at 0.25% fiber content whereas 20% UCS indicated optimum strength of 3.04 MPa at 0.25% fiber content.
The optimum strength of the pit sand-cement mortar prisms after 1, 2, 7, and 28 days was recorded at 11.11% RHA by the mass of the cement.
In this study, an artificial neural network (ANN) model was developed for predicting an optimum bonding strength of heat treated woods.
Teak is not a fast growing species but can produce a timber of optimum strength in relatively short rotations of 21 years [ 17] depending of the sapwood-heartwood percentages.
The proposed numerical procedure is valuable for optimum strength design of cement-slag-limestone ternary concrete.
The recent development of multi-step aging treatments and thermo-mechanical processes to improve fracture toughness of optimum strength Ti-15V-3Al-3Sn-3Cr has incranged the range of aerospace applications for this cold-formable alloy.
Understanding of essential microstructural features necessary to develop an optimum combination of strength and ductility in magnesium alloys is needed for materials by the microstructural design approach.
These results indicate that an optimum balance of strength and ductility is achieved by engineering a microstructure containing randomly-oriented fine grains, intragranular precipitation and minimal twins within α-Mg matrix.
