Signals used to control the Review what the lab does when blade test (applied loads, various sensor types fail. How is deflections, accelerations, the data processed and reported strains) when a sensor (e.g. a strain gauge) failed for a portion of the test? Functionality of sensors shall be verified throughout the test. Critical sensors shall be fixed or replaced when the fail. Stiffness of the blade shall be checked and documented several times throughout the test. 34 9.4 Fatigue load testing Typically the customer defines the Miner summation slope factor. The test lab may be responsible for determining the total damage equivalent load applied during the test. 35 Repairs during fatigue testing If any repairs were performed during fatigue testing how were they documented? Had the repaired area already achieved the target damage level? 10.4 Other blade property tests 36 10.4.1 mass and CG shall be How was the mass/cg measurement determined. obtained? Are the uncertainty estimates reasonable for these results? Is any additional hardware noted? Are any tare loads appropriately accounted for? 37 10.4.2 Natural frequencies. Review how natural frequency Minimum of 1st and 2nd flatwise measurements are conducted. Is
Signals used to control the blade test (applied loads, deflections, accelerations, strains) Functionality of sensors shall be verified throughout the test. Critical sensors shall be fixed or replaced when the fail. Stiffness of the blade shall be checked and documented several times throughout the test. Review what the lab does when various sensor types fail. How is the data processed and reported when a sensor (e.g. a strain gauge) failed for a portion of the test? 34 9.4 Fatigue load testing Typically the customer defines the Miner summation slope factor. The test lab may be responsible for determining the total damage equivalent load applied during the test. 35 Repairs during fatigue testing If any repairs were performed during fatigue testing how were they documented? Had the repaired area already achieved the target damage level? 10.4 Other blade property tests 36 10.4.1 mass and CG shall be determined. How was the mass/cg measurement obtained? Are the uncertainty estimates reasonable for these results? Is any additional hardware noted? Are any tare loads appropriately accounted for? 37 10.4.2 Natural frequencies. Minimum of 1st and 2nd flatwise Review how natural frequency measurements are conducted. Is
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