| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hand, Duncan P.
Heriot-Watt University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (60/60 displayed)
- 20233D Laser Beam Shaping for Manufacturing within Volumes
- 2023Industrial ultrashort pulsed laser welding of copper and titanium to quartz and glass components for optical applications
- 2023Laser-Induced Forward Transfer of Ni-rich NiTi Alloys for Shape Memory Applicationscitations
- 2023Laser surface texturing of structural components for residual stress alleviation during ultrashort pulsed laser welding
- 2022A Novel Process for Manufacturing High-Friction Rings with a Closely Defined Coefficient of Static Friction (Relative Standard Deviation 3.5%) for Application in Ship Engine Componentscitations
- 2022Laser induced forward transfer of NiTi deposits for functionally graded SMA components
- 2021Stress Induced Birefringence of Glass-to-Metal Ultrashort Pulse Welded Components
- 2021Laser-manufactured glass microfluidic devices with embedded sensors
- 2021Maskless laser prototyping of glass microfluidic devices
- 2019Interlaced Laser Beam Scanning: A Method Enabling an Increase in the Throughput of Ultrafast Laser Machining of Borosilicate Glasscitations
- 2019High yield ultrafast laser microwelding process for direct joining of metal-to-glass
- 2018Laser-based fabrication of microfluidic devices for porous media applicationscitations
- 2018Rapid Laser Manufacturing of Microfluidic Devices from Glass Substratescitations
- 2018The role of laser pulse overlap in ultrafast thin film structuring applicationscitations
- 2017Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloycitations
- 2017Fabrication of three-dimensional micro-structures in glass by picosecond laser micro-machining and welding
- 2017Integrating fiber Fabry-Perot cavity sensor into 3-D printed metal components for extreme high-temperature monitoring applicationscitations
- 2017Laser spot welding of laser textured steel to aluminiumcitations
- 2017Anti-counterfeiting security markings for metal goods
- 2016Characterisation of weld zone reactions in dissimilar glass-to-aluminium pulsed picosecond laser weldscitations
- 2016Picosecond laser welding of optical to structural materials
- 2016Laser polishing - Enhancing surface quality of additively manufactured cobalt chrome and titanium components
- 2016Stainless steel component with compressed fiber Bragg grating for high temperature sensing applicationscitations
- 2016Surface Separation Investigation of Ultrafast Pulsed Laser Welding
- 2015Electrodeposited magnetostrictive Fe-Ga alloys for miniaturised actuatorscitations
- 2015Laser surface texturing for high friction contactscitations
- 2015Measuring residual stresses in metallic components manufactured with fibre bragg gratings embedded by selective laser meltingcitations
- 2015SS316 structure fabricated by selective laser melting and integrated with strain isolated optical fiber high temperature sensorcitations
- 2015In-situ strain sensing with fiber optic sensors embedded into stainless steel 316citations
- 2015Laser processing of thin flex glass for microelectronic, OLED lighting, display and PV applications
- 2014Nanosecond laser texturing for high friction applicationscitations
- 2014Picosecond laser welding of similar and dissimilar materialscitations
- 2014In-situ measurements with fibre bragg gratings embedded in stainless steelcitations
- 2014Laser texturing for high friction applicationscitations
- 2013Flexible delivery of Er:YAG radiation at 2.94 µm with negative curvature silica glass fiberscitations
- 2013Embedding optical fibers into stainless steel using laser additive manufacturing
- 2013Embedding metallic jacketed fused silica fibres into stainless steel using additive layer manufacturing technologycitations
- 2012Laser precision surface sculpting of 2D diffractive optical structures on metals
- 2012On the Use of Silver Nanoparticles for Direct Micropatterning on Polyimide Substratescitations
- 2012Generation of optical quality structured surfaces on borosilicate glass using 515nm picosecond laser pulses and a liquid-crystal-based spatial light modulator
- 2011A Fiber-Laser Process for Cutting Thick Yttria-Stabilized Zirconia: Application and Modelingcitations
- 2011Micro-sculpting of diffractive scales on metal surfaces for optical position encoders, the 'YAGboss' process
- 2011Hermetic glass frit packaging in air and vacuum with localized laser joiningcitations
- 2010An additive method for photopatterning of metals on flexible substratescitations
- 2009Electrode ablation on piezoelectric ceramics by NS-pulsed laser ablation for sensor applications
- 2009Zirconia ceramic dental restorations
- 2008Pulsed laser micromachining of yttria-stabilized zirconia dental ceramic for manufacturingcitations
- 2008The application of the mid-infrared spectral region in medical surgerycitations
- 2008Mid-infrared gas sensing using a photonic bandgap fibercitations
- 2008Hermetic joining of micro-devices using a glass frit intermediate layer and a scanning laser beamcitations
- 2008Fiber laser processing of thick Yttria stabilized Zirconia
- 2005Delivery of nanosecond pulses through hollow core photonic crystal fibres and the associated damage limitationscitations
- 2005Single-mode mid-IR guidance in a hollow-core photonic crystal fibercitations
- 2005Developments towards controlled three-dimensional laser forming of continuous surfacescitations
- 2004Delivery of high energy light through pbg fiber for laser machining
- 2004Iterative 3D laser forming of continuous surfaces
- 2003Dynamic distortion measurements during laser forming of Ti-6Al-4V and their comparison with a finite element modelcitations
- 2003Dynamic shape measurement system for laser materials processingcitations
- 2002High speed videography of microvia formation and melt ejection
- 2001Real-time, nonintrusive oxidation detection system for the welding of reactive aerospace materials
Places of action
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document
Stress Induced Birefringence of Glass-to-Metal Ultrashort Pulse Welded Components
Abstract
Ultrashort pulse laser welding of dissimilar materials is an attractive alternative to the currently-used adhesive bonding of glass-to-metal components e.g. in the fabrication of lasers and optical systems. Adhesive bonding can suffer from performance and reliability issues such as outgassing, creep and degradation with age. The bonding process can also be labour intensive to ensure consistent deposition and curing of the adhesive. Although interest in ultrashort pulse laser welding as a viable bonding method has been gaining momentum [1,2], it is important to quantify the impact of any stress induced by the bonding process on the optical performance of the component being bonded. We therefore developed a polariscope for stress field analysis of 10 mm BK7 glass cubes bonded to 15 mm x 15 mm x 5 mm aluminium coupons using the Patterson and Wang 6-step method [3] to calculate the stress induced retardation present in the samples. We have applied this measurement system and analysis technique both to laser-bonded samples, and to samples adhesively bonded with a standard approach used in industry. The results of this analysis will be presented in terms of ISO Standard for stress birefringence in optics [4]. It was observed that ultrashort pulse laser welding results in a low level of stress induced birefringence within an 85% optical aperture of the 10 mm cube. These levels are suitable for use in photography and microscopy applications as defined by the relevant ISO standard for permissible stress induced birefringence limits in optics. The welds were compared to adhesively bonded and hydroxide catalysis bonded samples.[1] R. Carter, M. Troughton, J. Chen, I. Elder, R. R. Thomson, M. J. D. Esser, R. A. Lamb, & D. P. Hand,(2017), Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloy, Applied Optics, 56, 16, 4873-4881. [2] R. Carter, (2019). UltraWELD: A new method for welding glass and metal. Abstract from Made For Space, Coventry, United Kingdom. [3] E. A. Patterson and Z. F. Wang (1991), Towards full field automated photoelastic analysis of complex components, Strain, 27, 49–53. [4] "ISO 10110-2:1996 - Optics and optical instruments -- Preparation of drawings for optical elements and systems -- Part 2: Material imperfections -- Stress birefringence," https://www.iso.org/standard/18089.html.