Pulsed Nd: YAG laser beam drilling: A review

GD Gautam, AK Pandey - Optics & Laser Technology, 2018 - Elsevier
Laser beam drilling (LBD) is one of non contact type unconventional machining process that
are employed in machining of stiff and high-strength materials, high strength temperature …

Performance and non-destructive evaluation methods of airborne radome and stealth structures

R Panwar, JR Lee - Measurement Science and Technology, 2018 - iopscience.iop.org
In the past few years, great effort has been devoted to the fabrication of highly efficient,
broadband radome and stealth (R&S) structures for distinct control, guidance, surveillance …

Effect of drilling allowance on TBC delamination, spatter and re-melted cracks characteristics in laser drilling of TBC coated superalloys

Z Fan, X Dong, K Wang, W Duan, R Wang, X Mei… - International Journal of …, 2016 - Elsevier
Laser drilling of inclined holes on Ni-based superalloys coated with thermal barrier coatings
(TBC) was studied using numerical simulation and experiments. Two types of drilling, three …

A review on short and ultrashort pulsed laser microdrilling: materials, mechanism, methods, and applications

P Deepu, T Jagadesh - Journal of the Brazilian Society of Mechanical …, 2024 - Springer
There is an increasing demand for accurate complex holes in aerospace, automotive,
electronics, and medical industries. The productivity of traditional tool-based …

Detection of micro-cracks on metal surfaces using near-field microwave dual-behavior resonator filters

J Kerouedan, P Queffelec, P Talbot… - Measurement …, 2008 - iopscience.iop.org
This paper demonstrates how micro-cracks at the surface of metals can be detected and
imaged by near-field microwave techniques from the crack-induced variations of the …

Microwave imaging of thick composite structures using circular aperture probe

MS ur Rahman, A Yassin… - … Science and Technology, 2018 - iopscience.iop.org
Thick multilayer composite structures based on sandwiched dielectric honeycomb and foam
cores are extensively utilized in the construction of many structural and protective …

A numerical study of the influence of interface morphology on the stress behavior in thermal barrier coatings near an inclined film-cooling hole

Z Cai, H Hong, D Peng, X Zhao, W Wang, Y Liu… - Ceramics …, 2020 - Elsevier
Early failure induced by the cooling-hole structure and the interface morphology has
significant influence on the integrity of thermal barrier coatings (TBCs). Thus, understanding …

Stress evaluation of TBCs with inclined film-cooling hole considering CMAS penetration-induced change of thermo-mechanical properties

Z Cai, L Qiao, X Zhao, W Wang - Engineering Failure Analysis, 2023 - Elsevier
Abstract CaO-MgO-Al 2 O 3-SiO 2 (CMAS) penetration is an essential factor leading to the
failure of thermal barrier coatings (TBCs), especially around the film-cooling hole structure of …

Twin gas jet-assisted laser drilling through thermal barrier-coated nickel alloy substrates

HK Sezer, L Li, S Leigh - International Journal of Machine Tools and …, 2009 - Elsevier
Laser fabrication of cooling holes in certain parts of the aero-engine components involves
percussion or trepan drilling at acute angles to the surface. These parts are often covered …

Mechanisms of acute angle laser drilling induced thermal barrier coating delamination

HK Sezer, L Li - 2009 - asmedigitalcollection.asme.org
Laser fabrication of cooling holes in certain parts of the aero-engine components involves
percussion or trepan drilling at acute angles (eg, 16–30 deg) to the surface. These parts are …