| 摘要 |
A method of designing a material by optimising values for design variables includes the steps of: (i) providing one or more property models that produce a prediction for a value of a respective property of the material as a function of the design variables and produce a value for the uncertainty in the prediction, (ii) setting a specification target for a desired value for each property and a probability for that specification target to be met or exceeded, (iii) determining a probabilistic target for a value for each property, the probabilistic target being based on the specification target and the probability, and defining a merit index factor based on the degree to which a given prediction satisfies the probabilistic target, (iv) constructing an overall merit factor from the individual merit index factors of the properties, and (v) determining a set of optimal design variables that optimise the overall merit factor. |
| 主权项 |
1. A method of designing a material by optimising values for a plurality of design variables, the method including the steps of:
(i) providing one or more property models, the ith property model (where i is an integer from 1 to nprop, the number of property models) producing a prediction Pi for a value of a respective property of the material as a function of the design variables, and further producing a value for the uncertainty σi in the prediction Pi, (ii) for each property, setting a specification target T0,i for a desired value of the property and a probability pi for that specification target T0,i to be met or exceeded, (iii) for each property, determining a probabilistic target Ti for a value of the property, the probabilistic target Ti being based on the specification target T0,i and the probability pi, and further defining a merit index factor Gi based on the degree to which a given prediction Pi satisfies the probabilistic target Ti, (iv) constructing an overall merit factor G from the individual merit index factors Gi of the properties, and (v) determining a set of optimal design variables that optimise the overall merit factor G. |
