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tribological testing

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... at dry sliding, mg/mm 3 11.5 × 10 −8 8.6 × 10 −8 9.7 × 10 −8 Wear intensity with lubricant, mg/mm 3 6.1 × 10 −10 6.1 × 10 −10 6.0 × 10 −10 Tribology tests were performed with the help of a friction machine according to a friction pattern disk shoe both at dry friction...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... aimed at developing new materials, surface treatments, or lubricants. In this view, an important role is played by the characterization of the wear products in identifying the wear mechanism. This activity is very fruitful in tribological testing for obtaining the proper information to be used...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
..., which can be useful for condition monitoring and wear mapping. Although the failure mode depends on the tribological conditions selected for individual investigation, some test conditions adopted in RCF tribometers can accelerate the RCF failure, for example, by either increased contact loading...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... A. , Leyendecker T. , Lemmer O. , Erkens G. , Weck M. , and Hanrath G. , Application of Low Temperature PVD Coatings in Rolling Bearings: Tribological Tests and Experiences with Spindle Bearing Systems , Surf. Coat. Technol. , Vol 86 , 1996 , p 460 – 466 10.1016/S0257-8972(96)03050-2...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... below the clamping assembly) Fig. 5 Fretting wear damage in electrical connectors Fig. 6 Illustration of fretting wear damage between a bone cement and a metallic femoral stem. Adapted from Ref 36 Fig. 7 Schematic of a basic fretting wear test and related fretting cycle...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... Testing , Tribotest , Vol 14 , 2008 , p 1 – 9 10.1002/tt.49 59. Hogmark S. , Jacobson S. , and Coronel E. , On Adhesion in Tribological Contacts—Causes and Consequences , Tribologia , Vol 26 , 2007 , p 3 – 16 60. Podgornik B. , Hogmark S. , Sandberg O...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
.... It discusses the processes involved in testing and modeling of impact wear, and includes two case studies. ceramics impact wear metals polymers wear modeling IMPACT OR PERCUSSIVE WEAR has been defined as “the wear of a solid surface that is due to percussion, which is a repetitive exposure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
.... In this classification, wear study is separated as elastomers, thermosets, glassy thermoplastics, and semicrystalline thermoplastics. The article describes the effects of environment and lubricant on the wear failures of polymers. It presents a case study on nylon as a tribological material. The article explains...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
.... Bayer R.G. , Mechanical Wear Prediction and Prevention , Marcel Dekker , 1994 4. Bayer R.G. , Wear Analysis for Engineers , HNB Publishing , New York , 2002 5. Voitik R.M. , Realizing Bench Test Solutions to Field Tribology Problems by Utilizing Tribological Aspect...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Failure mechanisms induced by the white layer. Source: Ref 22 Fig. 8 Height change vs. number of compound impact cycles for aluminium 2011 T3 specimens tested against 17-4 PH stainless steel counterfaces with varying impact stresses (sliding velocity 5.33 m/s). Source: Ref 5 Fig. 9...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... on mechanisms for corrosive wear. Next, the article explains testing methods and characterization of corrosive wear. Various factors that influence corrosive wear are then covered. The article concludes with general guidelines for material selection against corrosive wear. corrosion corrosive wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001530
EISBN: 978-1-62708-225-9
... and their microstructures examined. Both samples were subjected to accelerated wear tests in a laboratory type pin-on-disk apparatus. During the tests, the bearing materials acted as pins, which were pressed against a rotating cast iron disk. The wear behaviors of both bearing materials were studied using weight loss...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... allows them to function without external conventional liquid lubrication. However, polymers also have some inherent tribological limitations, such as significantly low thermal conductivity, dissipativity, and diffusivity as compared with metals. Frictional heat generated at the sliding contacts cannot...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... varied from 4.1 to 5.5 GPa (0.59 to 0.80 × 10 6 psi). The results inferred that silicon nitride tested under various tribological conditions fails in a noncatastrophic spalling mode. Additionally, silicon nitride hybrid bearings were tested, using 12.7 mm (0.5 in.) diameter balls, M50 steel rings...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... and disruption of oxide films and was considered in Ref 25 . The question was considered more recently and investigated as a means of speeding up fretting wear tests, assuming that high frequencies had no significant effect ( Ref 25 ). The range of frequencies investigated was from 10 to 10 4 Hz, using steel...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001831
EISBN: 978-1-62708-241-9
.... Hardness of the failed roller bearing (HRC) Table 2 Hardness of the failed roller bearing (HRC) Test position Outer ring Roller Specification 1 60.2 65.3 65–66 2 60.3 65.8 3 60.2 65.5 Average 60.2 65.5 SEM and EDS Analyses Fracture Surface First...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... additives with ISO 100 viscosity. After about 250 h of operation, two gearboxes failed by bending fatigue. Investigation showed the primary failure mode was scuffing, and the earlier bending fatigue failures were caused by dynamic loads generated by the worn gear teeth. Testing of a prototype gearbox showed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... mill for failure analysis. Visual inspection, macro-and microfractography along with optical microscopy and microhardness testing were used to determine the cause of the observed spalling. Experimental Procedure Cleaning dust, metal fines, and oil residues from the samples was performed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
... characteristicsFracture toughnessMicrostructureCorrosion resistance General fracture failure analysis procedural sequence Table 3 General fracture failure analysis procedural sequence Step 1: Determine prior history Review documentary evidence  Test certificates  Mechanical/wear test data  Pertinent...