8578
This test consists of DCB specimen fabricated from using unidirectional FFF layers , an 8 μm Kapton starter crack inserted in the midplane during the printing process , and reinforcing glass/epoxy doublers to prevent DCB arm failure during loading .
 concept or principle: fabricated; concept or principle: unidirectional; manufacturing process: FFF; concept or principle: midplane; manufacturing process: printing process; concept or principle: failure
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: fabricated, unidirectional, FFF, midplane, printing process, failure 
Answer:
 concept or principle: fabricated; concept or principle: unidirectional; manufacturing process: FFF; concept or principle: midplane; manufacturing process: printing process; concept or principle: failure