14 Result(s)
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Chapter
Stress Induces MMM Signals
A large number of components, such as engine crankshafts, high-speed bearings and gears, are usually subjected to complex loads in service. Naturally, stress can be induced in these components by the applied t...
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Chapter
Applied Magnetic Field Strengthens MMM Signals
The research results in Chaps. 4–6 indicate that the metal magnetic memory (MMM) signals are essentially induced by stress con...
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Chapter
Detection of Damage in Remanufactured Coating
For the remanufactured components whose heat residual stress meets the requirements, the service performance of the coatings also needs to be evaluated afterwards. The evaluation of remanufactured coatings is ...
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Chapter
Detection of Damage of the Waste Drive Axle Housing and Hydraulic Cylinder
At present, the abovementioned metal magnetic memory (MMM) studies in Parts 2 and 3 mainly focused on standard specimens rather than real remanufacturing components. This is because the inconsistency of the si...
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Chapter
Development of a High-Precision 3D MMM Signal Testing Instrument
In recent years, metal magnetic memory (MMM) detection technology has been applied to many engineering fields. Due to the expansion of market demand, a large number of MMM testing instruments have been develop...
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Chapter
Nondestructive Testing for Remanufacturing
Global environmental pollution and resource scarcity have become increasingly serious at present. In addition, many pieces of mechanical equipment have been scrapped from various industries, including the auto...
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Chapter
State of the Art of the MMM Technique
In 1975, Misra found a transient magnetic field during crack propagation under low carbon steel tensile experiments. This result showed that spontaneous magnetic flux leakage was formed when the ferromagnetic ...
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Chapter
Temperature Impacts on MMM Signals
When the magnet exceeds a certain temperature, its magnetism will be weakened due to the increase in temperature and the thermal movement of the atoms. The magnetic moment of the magnet atom tends to be arrang...
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Chapter
Characterization of Heat Residual Stress During Repair
After the damaged remanufacturing cores are evaluated, the cladding coating prepared by advanced surface engineering techniques will be deposited on the damage zones of the cores if they have remanufacturing v...
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Chapter
Evaluation of the Repair Quality of Remanufactured Crankshafts
Due to the inconformity of the failure mode or damage degree in the remanufacturing cores as shown in Chap. 12, the corresponding repair process parameters in remanufact...
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Chapter
Theoretical Foundation of the MMM Technique
The metal magnetic memory (MMM) is considered a new nondestructive testing (NDT) method for detecting early damage of ferromagnetic materials or evaluating the repair quality of remanufactured products. Howeve...
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Chapter
Stress Concentration Impacts on MMM Signals
From previous studies, we find that whether the magnetomechanical effect is caused by typical loads, such as tension, compression and bending, or whether the friction magnetization is caused by single and reci...
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Chapter
Frictional Wear Induces MMM Signals
Apart from tensile, compression and bending loads, friction can also induce stress. Friction and wear caused by rubbing and snagging are the main failure modes of mechanical parts. Approximately one-third to o...
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Chapter
Detection and Evaluation of Coating Interface Damage
Although metal magnetic memory (MMM) evaluation of heat residual stress and service fatigue damage for remanufactured coatings has been investigated in Chaps. 9 and ...
