1930
The AM ’ d composites proved to not only improve upon Ti64 ’ s mechanical properties but also produced an in-situ Si-based tribofilm during tribological testing that minimized wear induced damage .
 manufacturing process: AM; material: composites; material: Ti64; material: s; concept or principle: mechanical properties; concept or principle: in-situ; concept or principle: tribological; process characterization: testing; concept or principle: wear; machanical property: damage
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: AM, composites, Ti64, s, mechanical properties, in-situ, tribological, testing, wear, damage 
Answer:
 manufacturing process: AM; material: composites; material: Ti64; material: s; concept or principle: mechanical properties; concept or principle: in-situ; concept or principle: tribological; process characterization: testing; concept or principle: wear; machanical property: damage