1904
In the qualification process , mechanical properties of the optimized process can be tested and validated as demonstrated for Ti6Al4V in .
 concept or principle: process; concept or principle: mechanical properties; concept or principle: process; material: be; material: as; material: Ti6Al4V
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: process; concept or principle: mechanical properties; concept or principle: process; material: be; material: as; material: Ti6Al4V