An application report: Protective thin film layers for high temperature sensor technology

Dencker, Folke; Wurz, Marc Christopher; Dubrovskiy, Sergey; Koroleva, Ekaterina

doi:10.1109/eiconrusnw.2016.7448110

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Through special design of a wear protection layer and an insulation layer, it was possible to guarantee the functionality of the sensors even at temperatures in the range of over 500 °C and at the same time considerable surface pressures over 1.5 GPa [32]. Even strain measurements on curved metallic surfaces are possible [33].…”

Section: Strain and Temperature Measurements Using Directly Deposited...mentioning

confidence: 99%

Residual Stresses from Incremental Hole Drilling Using Directly Deposited Thin Film Strain Gauges

et al. 2022

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Background Commonly, polymer foil-based strain gauges are used for the incremental hole drilling method to obtain residual stress depth profiles. These polymer foil-based strain gauges are prone to errors due to application by glue. For example zero depth setting is thus often erroneous due to necessary removal of polymer foil and glue. This is resulting in wrong use of the calibration coefficients and depth resolution and thus leading to wrong calculations of the obtained residual stress depth profiles. Additionally common polymer foil-based sensors are limited in their application regarding e.g. exposure to high temperatures. Objective This paper aims at a first step into the qualification of directly deposited thin film strain gauges for use with the incremental hole drilling method. With the directly deposited sensors, uncertainties regarding the determination of calibration coefficients and zero depth setting due to the absence of glue can be reduced to a minimum. Additionally, new areas of interest such as the investigation of thermally sprayed metallic layers can be addressed by the sensors due to their higher temperature resilience and their component inherent minimal thickness. Methods For the first time, different layouts of directly deposited thin film strain gauges for residual stress measurements were manufactured on a stainless steel specimen. Strain measurements during incremental hole drilling using a bespoke hole drilling device were conducted. Residual stress depth profiles were calculated using the Integral method of the ASTM E837 standard. Afterwards, strain measurements with conventional polymer foil-based strain gauges during incremental hole drilling were conducted and residual stress depth profiles were calculated accordingly. Finally the obtained profiles were compared regarding characteristic values. Results The residual stress depth profiles obtained from directly deposited strain gauges generally match the ones obtained from conventional polymer foil based strain gauges. With the novel strain gauges, zero depth setting is simplified due to the absence of glue and polymer foil. With the direct deposition, a wide variety of rosette designs is possible, enabling a more detailed evaluation of the strain field around the drilled hole. Conclusions The comparative analysis of the obtained residual stress depth profiles shows the general feasibility of directly deposited strain gauges for residual stress measurements. Detailed investigations on uncertainty sources are still necessary.

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Section: Strain and Temperature Measurements Using Directly Deposited...mentioning

confidence: 99%

Residual Stresses from Incremental Hole Drilling Using Directly Deposited Thin Film Strain Gauges

et al. 2022

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“…The discussed dynamic system in the space of condition variables is nonlinear one of the piecewiselinear type. Based on the said dynamic system, it is possible to investigate frequency content and oscillations amplitude level at wide variability of the model' parameters (Dencker et al, 2016;Bulyanitsa et al, 2017).…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

The Dynamics of Contact Interaction during the Cutting Process

Vasilkov¹,

Nikitin²,

Tarikov³

2019

Int J Math, Eng, Manag Sci

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At parts manufacturing using metal-cutting machine tools, the process conditions eliminating high vibration levels are among the most important factors ensuring safe operation of the said metal-cutting machine tools. To solve the task, specific features typical for creation of the dynamic model of mechanical processing in the space of condition variables at contact interaction in the cutting zone based on the piecewise linear approximation were discussed. The contact interaction process was considered as the double-phase one envisaging sequence of retention at adhesion and sliding at adhesion bonds rupture. The cutting tool’ and the workpiece’ contact interactions are presented in the form of rheological models. Conditions of retention and sliding phases sequence are formed by the system itself that is the self-excited one. The set of research performed allowed considering contact interaction of the machined surface with the rear surface of the tool and the of the moving chip with the anterior surface of the tool with the anterior surface of the tool as factors largely defining the conditions of self-sustained oscillations. The contact interaction’ double-phase nature ensures self-organised dosing and selectiveness of the dynamic contours at interaction in the autonomous dynamic process system.

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Design of Probability Density Function Targeting Energy Efficient Network for Coalition Based WSNs

Mishra

Jha

Tripathi

et al. 2017

Wireless Pers Commun

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An application report: Protective thin film layers for high temperature sensor technology

Cited by 4 publications

References 10 publications

Residual Stresses from Incremental Hole Drilling Using Directly Deposited Thin Film Strain Gauges

Residual Stresses from Incremental Hole Drilling Using Directly Deposited Thin Film Strain Gauges

The Dynamics of Contact Interaction during the Cutting Process

Design of Probability Density Function Targeting Energy Efficient Network for Coalition Based WSNs

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