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One FBG is fixed on tested object, its wavelength is, and the other one is fixed on constructional element which has same material and temperature field, its wavelength is.
Assumptions are made before the design: the radial distance between the well bore and casing is, the thickness of the sensor is less than , the maximum deformation should be less than. 3.2 Design of convoluted diaphragm The design and processing of convoluted diaphragm is the key factor of sensor designing.
The orthotropic theory is commonly used in engineering project[4], but it’s complicated, in this work, empirical formula is used in the design, after that, finite element analysis is done to optimize structure of the convoluted diaphragm.
Selection of the material is crucial to the property of elastic component.
Material of the elastic component must have the feature of high elastic limit, small elastic hysteresis, corrosion resistant, good capability for machining, high fatigue limit and economical efficiency.

Materials Protection, 2004, 37(6):263-265
History of thermal barrier coating and recent reseach[J].Material Review, 2002, 16(3):7-11
Recent research of thermal barrier coating and development direction [J].Materials Review, 2006, 20(3):6-9
Recent improvement of electric beam surface engineering (I) [J].China device management, 2000, 6(8): 54-55
Pulsed electron-beam technology for surface modification of metallic materials [J].American Vacuum Society, 1998, 16(4): 2483

Introduction To produce materials with balanced combinations of high strength and high ductility has been a long-standing mission of material researchers for various engineering applications.
Fig. 4 (a) indicates the engineering stress-strain curves of HPT-processed 45 steel and pure iron, and the partial curve of as-received 45 steel is presented for comparison.
The comparable UE of the two materials can be attributed to the different strain hardening behaviors.
Gil-Sevillano, in: Plastic Deformation and Fracture of Materials, edited by H.
Mughrabi, volume 6 of Materials Science and Technology: a Comprehensive Treatment, VCH, New York (1993)

Introduction In this advanced technology era, most devices require nano-sized aluminum materials that fit the device.
Progress in nano-engineered anodic aluminum oxide membrane development.
Materials, 4 (3), pp. 491
International Journal of Engineering Development and Research, 3 (4), pp. 144-145
Advanced Materials Research, pp 610–614.

Thus the research in the field of concrete durability is vital and may be documented in numerous materials [1-14], and [15].
Tran, Correlation between Bulk and Surface Resistivity of Concrete, International Journal of Concrete Structures and Materials. 9 (1) (2014) [14] P.
Jasniok, Influence of rapid changes of moisture content in concrete and temperature on corrosion rate of reinforcing steel, Procedia Engineering, 108, (2016) 316-323
Konečný, Reliability of Reinforced Concrete Bridge Decks with Respect to Ingress of Chlorides, Ph.D. thesis, Faculty of Civil Engineering, VŠB – Technical University of Ostrava, (2007)
Rogers, Durability of Ternary Blend Concrete with Silica Fume, and Blast-Furnace Slag: Laboratory and Outdoor Exposure Site Studies, ACI Materials Journal, 99(5) (2002), 499–508

Saha, Aluminum extrusion technology, ASM International, Materials Park, OH, USA, 2000
Stratton, Raising productivity of aluminium extrusion with nitrogen, International Heat Treatment and Surface Engineering, 2 (2008) 105-108
Reggiani, et al, Effect of liquid nitrogen die cooling on extrusion process conditions, Key Engineering Materials, 491 (2012) 215-222
Tomesani, Extrusion of Light and Ultralight Alloys with Liquid Nitrogen Conformal Cooled Dies: Process Analysis and Simulation, Journal of Materials Engineering and Performance, (2021)
Yannacopoulos, On the effect of different material constitutive equations in modeling friction stir welding: A review and comparative study on aluminum 6061, International Journal of Advances in Engineering & Technology, 7 (1) (2014) 1-20

Materials and experimental procedure Fabrication and characterization of porous Ti substrates.
Commercially pure Titanium (cpTi) powder (SE-JONG Materials Co.
Galante, Determinants of stress shielding: design versus materials versus interface, Clin.
Torres, Electrophoretic Deposition and Characterization of Chitosan/45S5 Bioactive Glass Composite Coatings on Porous Titanium for Biomedical Applications, Key Engineering Materials 654 (2015) 189-194
Collings, Materials Properties Handbook: Titanium Alloys.

Materials and Method Chemicals.
Preparation of Peat Clay Materials.
Kartikawati, Functionalization and Deconvolution of Tubular Ceramic Support Membrane Prepare from High Silica Spent Bleaching Earth by Centrifugal Casting, Key Engineering Materials 975 (2024) 87-94
Soegijono, Synthesis of polymer hybrid latex polystyrene methylmethacrylate-co-butylacrylate with organo-montmorillonite as filler through miniemulsion polymerization for barrier paper application, IOP Conference Series: Materials Science and Engineering 509 (2019) 012056
Mansur, FTIR spectroscopy characterization of poly (vinyl alcohol) hydrogel with different hydrolysis degree and chemically crosslinked with glutaraldehyde, Materials Science and Engineering: C 28(4) (2008) 539-548

McWilliam 1,c 1 University of Nottingham, School of Mechanical, Materials and Manufacturing Engineering University Park, Nottingham NG7 2RD, UK 2 Present address: IDEKO, Arriaga Kalea 2, E-20870, Elgoibar, Spain a isadaba@ideko.es, bcolin.fox@nottingham.ac.uk, cstewart.mcwilliam@nottingham.ac.uk Keywords: MEMS, residual stress, anodic bonding Abstract.
Residual stress is a key issue in MEMS packaging, in terms of device reliability and performance [1].
The materials were modeled as perfectly elastic with Young's modulus 170GPa (silicon) and 62GPa (glass) and Poisson's ratio of 0.262 (silicon) and 0.2 (glass).
Sadaba: (2004) Residual stress effects in micro-engineered sensors, PhD Thesis, University of Nottingham
Kowal: Selection of glass, anodic bonding conditions and material compatibility for silicon-glass capacitive sensors, Sensors and Actuators A, Vol. 46-47 (1996), 113-120

W, The method of finite element internal force for analysis of arch dam stresses, Journal of Hydroelectric Engineering, 9(4), 2002, 18-24
K, Effect of mesh size on analysis of arch dam equivalent stress, Journal of Hydraulic Engineering, 9 (2004), 83-87
X, Adaptive Finite Element Method and Its Applications in Engineering, Advances in Mechanics, 27(4), 1997, 479-488
Y, Adaptive 3-D finite element method and its application in arch dam, Journal of Hydroelectric Engineering, 25(3), 2006, 62-66
H, Computational Rock Mechanics and Engineering, Beiking: China Water Power Press, 2006