Table 1. Lay-up of specimens No. of Specimens Interfaces S1 Woven (-45/45)/Foam S2 90/Foam S3 Woven (0/90)/Foam Table 2. Initial parameters of KGA Initial population Crossover rate Mutation rate Maximum number of iterations 100 0.75 0.01 1000 Table 3. AE characteristics of pure failure modes Failure mode Dominant Amplitude Dominant Energy Dominant Frequency ranges (dB) ranges (aj) ranges (kHz) Core Failure 40-60 0-30 30-80 Failure of the Adhesive 60-80 5-230 100-150 Bond Matrix Cracking 75-85 90-390 160-250 Fiber Breakage 85-105 350-1250 250-500 Table 4. Dominant ranges of AE parameters Dominant Dominant Dominant Count Dominant Duration Specimen Amplitude range Frequency range range range (μs) (dB) (kHz) 35-55 25-100 20-1500 25-10000 40-60 100-150 10-550 10-2400 S1 40-70 160-240 5-250 5-1500 45-70 240-500 5-40 5-500 35-50 30-95 20-1100 20-9100 S2 40-60 100-160 10-545 15-5400
Table 1. Lay-up of specimens Interfaces No. of Specimens Woven (-45/45)/Foam S1 90/Foam S2 Woven (0/90)/Foam S3 Table 2. Initial parameters of KGA Initial population Crossover rate Mutation rate Maximum number of iterations 100 0.75 0.01 1000 Table 3. AE characteristics of pure failure modes Failure mode Dominant Amplitude ranges (dB) Dominant Energy ranges (aj) Dominant Frequency ranges (kHz) Core Failure 40-60 0-30 30-80 Failure of the Adhesive Bond 60-80 5-230 100-150 Matrix Cracking 75-85 90-390 160-250 Fiber Breakage 85-105 350-1250 250-500 Table 4. Dominant ranges of AE parameters Specimen Dominant Amplitude range (dB) Dominant Frequency range (kHz) Dominant Count range Dominant Duration range (μs) S1 35-55 40-60 40-70 45-70 25-100 100-150 160-240 240-500 20-1500 10-550 5-250 5-40 25-10000 10-2400 5-1500 5-500 S2 35-50 40-60 30-95 100-160 20-1100 10-545 20-9100 15-5400
Farzad-NTE.docx