S/N | Shapes | Applications | Aging Factor |
1. | Constant (Random) Failure Rate | ・ Applied to entities who have the propensity to fail randomly or by chance ・ unpredictable failures ・ Third-party damage ・ Material defects | ・ Random |
2. | Increasing failure Rate | ・ In most situations this is the hazard we experience ・ Machinery, organism, ・ Consumer products ・ Corrosion ・ Fatigue | ・ Time dependent |
3. | Decreasing failure Rate | ・ Not very common ・ New typist employed in a company | ・ Time dependent |
4. | Bathtub-shape failure rate | ・ Patients who undergo surgery ・ infant mortality | ・ Time dependent |