Observation of magnetic flux density around fatigue crack tips in bearing steel using an SHPM with a three-dimensional small-gap probe
Source abstract
Abstract
Abstract Fatigue failure of steel occurs when cracks form in a component and continue to grow to a size large enough to cause failure. In order to understand the strength of a steel component it is important to locate these cracks. We developed a scanning Hall probe microscope (SHPM) equipped with a GaAs film sensor and observed fatigue cracks at room temperature in air while they were growing. In this paper we report two important findings regarding the magnetic field properties: a decrease in the magnetic flux density at the early fatigue stage and the polarization of the magnetic field ahead of the fatigue cracks occurring during crack growth.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Force Microscopy Techniques and Applications · Non-Destructive Testing Techniques · Magnetic Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Magnetic imaging by “force microscopy” with 1000 Å resolution10.1063/1.97800 ↗
2. Martin · Appl Phys Lett · 1988 · 52 · 24410.1063/1.99482 ↗
3. Moser · Phys Rev Lett · 1995 · 74 · 184710.1103/PhysRevLett.74.1847 ↗
4. Vu · Physica B · 1994 · 194 · 179110.1016/0921-4526(94)91395-1 ↗
5. Kirtley · Appl Phys Lett · 1995 · 66 · 113810.1063/1.113838 ↗
6. Moler · Phys Rev B · 1997 · 55 · 1275310.1103/PhysRevB.55.12753 ↗
7. Yamamoto · Appl Phys Lett · 1996 · 69 · 326310.1063/1.118030 ↗
8. Scanning magnetoresistance microscopy with a magnetoresistive sensor cantilever10.1063/1.1469681 ↗
9. Chang · Appl Phys Lett · 1992 · 61 · 197410.1063/1.108334 ↗
10. Scanning Hall probe microscopy of superconductors and magnetic materials10.1116/1.588514 ↗
11. Scanning Hall probe microscopy of ferromagnetic structures10.1016/S0304-8853(98)01002-6 ↗
12. Room temperature scanning Hall probe microscopy using GaAs/AlGaAs and Bi micro-Hall probes10.1016/S0304-3991(02)00087-6 ↗
13. Room temperature scanning Hall probe microscopy of localized magnetic field fluctuations on the surfaces of magnetic recording media, permanent magnets and crystalline garnet films in external bias fields10.1016/S0304-8853(01)00987-8 ↗
14. Nano and micro Hall-effect sensors for room-temperature scanning Hall probe microscopy10.1016/S0167-9317(04)00205-9 ↗
15. High temperature scanning Hall probe microscopy (HT-SHPM) using AlGaN/GaN 2DEG micro-Hall probes10.1063/1.2712962 ↗
16. Scanning Hall probe microscopy (SHPM) using quartz crystal AFM feedback10.1166/jnn.2008.A265 ↗
17. Novel variable temperature scanning nano-Hall probe microscope system for large area magnetic imaging incorporating piezoelectric actuators maintained at room temperature10.1088/0957-4484/15/6/018 ↗
18. 50nm Hall sensors for room temperature scanning Hall probe microscopy10.1143/JJAP.43.777 ↗
19. Room temperature scanning micro-Hall probe microscope imaging of ferromagnetic microstructures in the presence of 2.5 tesla pulsed magnetic fields generated by an integrated mini-coil10.1143/JJAP.41.L1402 ↗
20. Changes in magnetic flux density around fatigue crack tips10.1111/j.1460-2695.2008.01307.x ↗
21. Murakami Y, editor-in-chief. Stress intensity factors handbook, vol. 1. Pergamon Press; 1987. p. 16–17.