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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001802
EISBN: 978-1-62708-241-9
... microscopy strain nitinol (nickel-titanium shape memory alloy) UNS N01555 Introduction As the use of NiTi in medical devices increases, so too will the number of NiTi failures. Important information regarding the loading condition, fracture mode, and material performance can be determined from...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006811
EISBN: 978-1-62708-329-4
... Abstract Bearing in mind the three-legged stool approach of device design/manufacturing, patient factors, and surgical technique, this article aims to inform the failure analyst of the metallurgical and materials engineering aspects of a medical device failure investigation. It focuses...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006832
EISBN: 978-1-62708-329-4
... sources including but not limited to testimony, witness statements, incident reports, police reports, videos, photographs, medical records, opposing expert reports, product specifications, operator manuals, warning labels, applicable regulations and design standards, scientific literature, inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001690
EISBN: 978-1-62708-226-6
.... In recent years, the emphasis on Nitinol has shifted to its superelastic behavior, and there are several applications in the medical device industries, including hip implants, bone spacers, bone staples, bone anchors, skull plates, vascular and nonvascular stents, and medical guidewires. 29 , 30...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006836
EISBN: 978-1-62708-329-4
... from a shape memory alloy can be used in medical treatments as they can be designed to be inserted into the body and then expand on reaching body temperature. These applications can result in unique spring failures. Example 15: Nitinol Orthodontic Archwires Investigation The fracture...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
.... , Hdeib A. and Khan F.R. , Applications of Medical Implant Materials , Materials for Medical Devices , Vol 23 , ASM Handbook , Narayan R.J. , Ed., ASM International , 2012 , p 18 – 35 . 10.31399/asm.hb.v23.a0005660 ...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... Abstract Several surgical tool failures were analyzed to understand why they occur and how to prevent them. The study included drills, catheters, and needles subjected to the rigors of biomedical applications such as corrosive environments, high stresses, sterilization, and improper cleaning...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001610
EISBN: 978-1-62708-222-8
... were investigated: four nipple piercings (Jewelry 1 to 4, Fig. 1 a and b) and two navel piercings (Jewelry 5 and 6, Fig. 1c ). The medical history of each patient was not made available for this investigation. The surfaces of the samples were investigated by JEOL 6300 scanning electron microscopy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001606
EISBN: 978-1-62708-226-6
... should never have been instituted for a mechanical device and should not be tolerated in a medical application where the comfort and well-being of an injured human is at issue. Would simply a material change prevent fatigue failures of the type observed in these fixation devices? Of course, it can...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... performance of polymers. crack-tip process fatigue crack growth fatigue fracture fatigue life analysis plastics toughening FATIGUE is of critical concern when designing polymeric components for structural applications. Like all engineering materials, fatigue failure often ensues in the polymer...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
... to the nominal intended use conditions will depend on the industry and application, as well as the severity of the consequences of failure. Developing Functional Requirements User Interaction The way in which a user directly interacts with a part generally defines the key physical and chemical loading...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006917
EISBN: 978-1-62708-395-9
... and market sectors. Some examples of plastic parts commonly seen in day-to-day failure analysis investigations that fail from ESC include: Housings and enclosures for medical devices Assemblies joined with metal screws Poly(acrylonitrile-butadiene-styrene), polyvinyl chloride, and chlorinated...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... Abstract Polymer materials are key building blocks of the modern world, commonly used in packaging, automobiles, building materials, electronics, telecommunications, and many other industries. These commercial applications of polymeric materials would not be possible without the use...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... in several demanding applications including food processing, medical components, and fluid handling. 1 The polysulfone body of the failed sensor had been injection molded around a tubular stainless steel insert to form the final component. Background information obtained on the application showed...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... Abstract This article discusses technologies focused on processing plastic materials or producing direct tools used in plastics processing. The article focuses on extrusion and injection molding, covering applications, materials and their properties, equipment, processing details, part design...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... thermoplastics are presented for comparison. Finally, the properties and applications of six common thermosets are briefly considered. chemical properties chemical structure electrical properties mechanical properties optical properties thermal properties thermoplastics thermosets...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
..., and the application of SEM in fractography is discussed. The article covers the failure mechanisms of ductile failure, brittle failure, mixed-mode failure, and fatigue failure. Lastly, image dependence on microscope type and operating parameters is also discussed. fractography microstructure sample...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006868
EISBN: 978-1-62708-395-9
..., and for military applications. They can be fabricated under sterile conditions, allowing for sanitary handling and preservation of foods, and for specialized medical components to be used in the operating arena during life-saving procedures. The process of developing a part to be manufactured from plastics...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006911
EISBN: 978-1-62708-395-9
.... Commercial applications of polymers with desirable tribological properties include mechanical components (gears, bearings, seals, tires, etc.), additives and dry-sprays, solid lubricants, and medical applications (joint replacement, soft implants, contact lenses, catheters, etc.). When tribological...