Temperature-amplitude spectrum for early full-field vibration-fatigue-crack identification

Česnik, Martin (avtor), Slavič, Janko (avtor)

A dynamic structure under vibration loading within its natural frequency range can experience failure due to vibration fatigue. Understanding the causes of such failure requires pinpointing the initiation time and location of fatigue cracks, tracking their propagation, and identifying the frequency range of critical stress responses. This research introduces a novel, thermoelasticity-based method – the Temperature-Amplitude Spectrum (TAS) method – for early-stage, full-field, and non-contact crack detection that operates during uninterrupted vibration testing. This method leverages high-speed infrared imaging to analyze the specimen’s temperature-amplitude spectrum, capturing comprehensive crack-related information, including initiation and propagation, in real time. Experimentally validated on both 3D-printed polymer and aluminum specimens, the TAS method accurately identified crack locations and paths without complex adjustments to the experimental setup or data processing. This new approach advances vibration-fatigue testing by enabling reliable, high-resolution crack detection and analysis while remaining computationally efficient.

• Jezik: Angleški jezik
• Ključne besede: vibration fatigue, crack initiation, crack propagation, thermoelasticity theory, high-speed IR imaging, temperature-amplitude spectrum, early full-field crack identification
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 11 str.
• Številčenje: Vol. 286, [art. no.] 109829
• PID: 20.500.12556/RUL-165158
• UDK: 536
• ISSN pri članku: 0020-7403
• DOI: 10.1016/j.ijmecsci.2024.109829
• COBISS.SI-ID: 215377923
• Datum objave v RUL: 25.11.2024

Gradivo je del revije

• Naslov: International journal of mechanical sciences
• Skrajšan naslov: Int. j. mech. sci.
• Založnik: Pergamon
• ISSN: 0020-7403
• COBISS.SI-ID: 25648384

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: utrujenost zaradi vibracij, nastanek razpok, širjenje razpok, teorija termoelastičnosti, infrardeče slikanje, spekter temperature in amplitude, zgodnja identifikacija razpok

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0263
• Naslov: Mehanika v tehniki