Thermomechanical evaluation of a glass-epoxy composite for astronomical optical devices
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Celso Eduardo Cruz González
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Mauricio Torres Arellano
Mauricio Torres Arellano is an aeronautical engineer specialized in composite structures. Mauricio was born in Mexico City in 1983; he studied his Masters of Science degree focused in filament winding. After that he pursued PhD. at University of Toulouse in composite structures, instrumentation and simulation by FEM. He is a former CONACYT Researcher, and now he is currently in charge of the Mechanical Engineering Department at CIDESI. Dr. Torres has experience in calculation of aeronautics structures, mechanical characterization and numerical simulation of composite materials.
Saúl Ledesma Ledesma is a mechanical engineer with postgraduate studies in Mechanical Engineering. Saul was born in Querétaro, Mexico in 1972. Saul is currently the manager of the Mechanical Systems Engineering Department at the Center for Engineering and Industrial Development in Querétaro, Mexico. Saul has experience in fields such as: Medical Systems, Transportation, Aviation Engines, Wind Energy and Aviation Systems with relevant experience in the following areas: numerical simulation of solid mechanics from metallic and composite materials, design of new components and mechanical systems from different materials (metals, glass and carbon fibers) following NPI and NTI design processes. Also, Saul is a Certified Green Belt in Six Sigma DMAIC and DFSS.
Perla Itzel Alcántara Llanas is a materials engineer specialized in polymer science and thermal and physicochemical characterization of polymers and polymeric reinforced materials. Perla Itzel was born in Querétaro, México in 1988; she studied materials engineering and Masters of Science focused on mechanical properties of composite materials. She is currently in charge of the Physicochemical Properties Laboratory at CIDESI, México. MSc Alcántara has experience in developing of polymers, geo-polymers materials, thermal, physicochemical characterization of polymers and accredited testing by ISO/IEC 17025.
Abstract
Astronomical devices, such as optical benches, carry high precision instrumentation work at low temperatures (−150 °C). To fulfill engineering requirements, glass-epoxy composite trusses are proposed. To evaluate the performance of this solution, thermomechanical characterization is carried out by means of dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), flammability tests, and tensile test and Scanning Electron Microscopy (SEM) observations. Two family of coupons are tested; first one environmentally aged for 10 years and second one recently fabricated, both at 20, 0 and −20 °C. Ageing influence is more noticeable on thermal behavior as Tg and self-extinguish capacity are lower. Ultimate tensile strength and maximum strain are lower for the aged coupons (16–25%), but there is not a remarkable difference in terms of stiffness. Also, coupons mechanically tested at −20 °C show a slight increment in strength. These results show that ageing of glass-epoxy composites must be considered when high performance devices are conceived to be fabricated with.
About the authors
Mauricio Torres Arellano is an aeronautical engineer specialized in composite structures. Mauricio was born in Mexico City in 1983; he studied his Masters of Science degree focused in filament winding. After that he pursued PhD. at University of Toulouse in composite structures, instrumentation and simulation by FEM. He is a former CONACYT Researcher, and now he is currently in charge of the Mechanical Engineering Department at CIDESI. Dr. Torres has experience in calculation of aeronautics structures, mechanical characterization and numerical simulation of composite materials.
Saúl Ledesma Ledesma is a mechanical engineer with postgraduate studies in Mechanical Engineering. Saul was born in Querétaro, Mexico in 1972. Saul is currently the manager of the Mechanical Systems Engineering Department at the Center for Engineering and Industrial Development in Querétaro, Mexico. Saul has experience in fields such as: Medical Systems, Transportation, Aviation Engines, Wind Energy and Aviation Systems with relevant experience in the following areas: numerical simulation of solid mechanics from metallic and composite materials, design of new components and mechanical systems from different materials (metals, glass and carbon fibers) following NPI and NTI design processes. Also, Saul is a Certified Green Belt in Six Sigma DMAIC and DFSS.
Perla Itzel Alcántara Llanas is a materials engineer specialized in polymer science and thermal and physicochemical characterization of polymers and polymeric reinforced materials. Perla Itzel was born in Querétaro, México in 1988; she studied materials engineering and Masters of Science focused on mechanical properties of composite materials. She is currently in charge of the Physicochemical Properties Laboratory at CIDESI, México. MSc Alcántara has experience in developing of polymers, geo-polymers materials, thermal, physicochemical characterization of polymers and accredited testing by ISO/IEC 17025.
Acknowledgment
The authors acknowledge Mexican Council of Science and Technology (CONACYT) and Center of Engineering and Industrial Development (CIDESI) and Institute of Astronomy – UNAM for the participation in the project FRIDA, led by Gran Telescopio Canarias (GranTeCan).
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Artikel in diesem Heft
- Frontmatter
- Effect of local heat treatment on residual stresses in an in-service repair welded pipeline
- Tension-compression asymmetry of quadruple CuCoNiBe alloys processed by high-temperature multi-pass equal channel angular pressing (ECAP)
- Structural properties of sputter-deposited nanocrystalline Ni thin films
- Effect of the notch location on the Charpy-V toughness results for robotic flux-cored arc welded multipass joints
- Effect of micro and nano-sized ZrSiO4 particles on the friction and wear properties of polymer matrix composites
- Evaluation of the plastic deformation behavior of modified 100Cr6 steels with increased fractions of retained austenite using cyclic indentation tests
- Thermomechanical evaluation of a glass-epoxy composite for astronomical optical devices
- Artificial gorilla troops algorithm for the optimization of a fine plate heat exchanger
- Metallurgical properties of boride layers formed in pack boronized cementation steel
- Numerical study of composite plates jointed adhesively with interspaced and interspaced double-lap joint subject to tensile load
- Thermal analysis and performance testing of heavy load truck composite brake linings
- Vibration characteristics of mineral composite beams by experimental modal test method
- Overview of friction welding processes for different metallic materials
Artikel in diesem Heft
- Frontmatter
- Effect of local heat treatment on residual stresses in an in-service repair welded pipeline
- Tension-compression asymmetry of quadruple CuCoNiBe alloys processed by high-temperature multi-pass equal channel angular pressing (ECAP)
- Structural properties of sputter-deposited nanocrystalline Ni thin films
- Effect of the notch location on the Charpy-V toughness results for robotic flux-cored arc welded multipass joints
- Effect of micro and nano-sized ZrSiO4 particles on the friction and wear properties of polymer matrix composites
- Evaluation of the plastic deformation behavior of modified 100Cr6 steels with increased fractions of retained austenite using cyclic indentation tests
- Thermomechanical evaluation of a glass-epoxy composite for astronomical optical devices
- Artificial gorilla troops algorithm for the optimization of a fine plate heat exchanger
- Metallurgical properties of boride layers formed in pack boronized cementation steel
- Numerical study of composite plates jointed adhesively with interspaced and interspaced double-lap joint subject to tensile load
- Thermal analysis and performance testing of heavy load truck composite brake linings
- Vibration characteristics of mineral composite beams by experimental modal test method
- Overview of friction welding processes for different metallic materials
