Fretting decreases fatigue strength of materials operating under cycling stress. This can result in fretting fatigue, whereby fatigue cracks can initiate in the fretting zone. Afterwards, the crack propagates into the material. Lap joints, common on airframe surfaces, are a prime location for fretting corrosion. This is also known as frettage or fretting corrosion .
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“Avarice is generally the last passion of those lives of which the first part has been squandered in pleasure, and the second devoted to ambition. He that sinks under the fatigue of getting wealth, lulls his age with the milder business of saving it.”
—Samuel Johnson (1709–1784)
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