Research Article

Fault Diagnosis of Beam-Like Structure Using Modified Fuzzy Technique

Table 3

Some of the fuzzy rules used in the analysis.

Sl. numberFuzzy rules

1If fnf is L1F1, snf is L2F1, tnf is L3F1, fms is L1M2, sms is L2M4, and tms is HLM3, then rcd is SD2 and rcl is SL1.
2If fnf is L1F4, snf is L2F3, tnf is L3F2, fms is H1M3, sms is M2M1, and tms is H3M4, then rcd is SD3 and rcl is HL1.
3If fnf is L1F3, snf is L2F4, tnf is L3F4, fms is M1M2, sms is H2M2, and tmd is H3M3, then rcd is MD1 and rcl is HL3.
4If fnf is H1F2, snf is H2F1, tnf is H3F1, fms is H1M3, sms is H2M4, and tms is H3M4, then rcd is SD4 and rcl is SL11.
5If fnf is M1F1, snf is L2F2, tnf is L3F3, fms is H1M1, sms is H2M1, and tms is H3M2, then rcd is SD4 and rcl is SL3.
6If fnf is L1F1, snf is L2F2, tnf is L3F3, fms is H1M3, sms is M2M1, and tms is H3M4, then rcd is MD1 and rcl is SL4.
7If fnf is L1F4, snf is L2F4, tnf is L3F4, fms is M1M2, sms is H2M1, and tms is H3M1, then rcd is HD1 and rcl is ML1.
8If fnf is H1F1, snf is M2F2, tnf is M3F1, fms is H1M2, sms is H2M2, and tms is H3M2, then rcd is MD2 and rcl is HL1.
9If fnf is L1F1, snf is L2F4, tnf is L3F4, fms is M1M1, sms is M2M1, and tms is M3M2, then rcd is SD2 and rcl is SL4.
10If fnf is M1F1, snf is L2F2, tnf is L3F1, fms is M1M2, sms is M2M2, and tms is H3M1, then rcd is SD3 and rcl is HL2.

rcd: relative crack depth; rcl: relative crack location.