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The hardness and UTS changed slightly in the 05th–15th layers and then increased quickly from the 20th layer to the 25th layers at the expense of ductility ; the fracture process transformed from ductile ( 01st–10th layers ) to mixed-mode ( 15th–20th layers ) , and finally to brittle fracture ( 25th layer ) .
 machanical property: hardness; machanical property: UTS; process parameter: layer; machanical property: ductility; concept or principle: fracture; machanical property: ductile; concept or principle: brittle fracture; process parameter: layer
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:
 machanical property: hardness; machanical property: UTS; process parameter: layer; machanical property: ductility; concept or principle: fracture; machanical property: ductile; concept or principle: brittle fracture; process parameter: layer