TY - JOUR
T1 - Opto-mechanical design for sight windows under high loads
AU - Ihracska, Balazs
AU - Crookes, Roy James
AU - Montalvão, Diogo
AU - Herfatmanesh, Mohammad Reza
AU - Peng, Jun
AU - Imran, Shahid
AU - Korakianitis, Theodosios
N1 - This document is the Accepted Manuscript version of the following article: Alexis Balazs Ihracska, Roy James Crookes, Diogo Montalvão, Mohammad Reza Herfatmanesh, Jun Peng, Shahid Imran, and Theodosios Korakianitis, ‘Opto-mechanical design for sight windows under high loads’, Materials & Design, Vol. 117, pp. 430-444, first published online 27 December 2016.
© 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
The final, published version is available online at doi: 10.1016/j.matdes.2016.12.080
PY - 2017/3/5
Y1 - 2017/3/5
N2 - In this study, the design aspects of optically accessible pressure vessels are investigated via a case study of a High Pressure Combustor experimental rig. The rig was designed to take optical measurements of combustion, simulating the conditions found in internal combustion engines and turbines. Although, it is not new to equip chambers and reactors with sight windows, important aspects of design and relevant information regarding optical access is missing or are insufficiently explored or not readily accessible in the existing literature. A comprehensive review of requirements for optical access to such high-pressure, high-temperature systems has been conducted. It is shown in a readily-navigable format as function of application and precision, with data and technical correlations hitherto not found in a ‘user-friendly’ style. The material selection procedure is detailed and supported by a complete comparison of optical materials and relevant properties. The review revealed a significant inconsistency in mechanical properties claimed in the literature for optical materials. As a response to this, increased safety factor values are suggested as function of level of uncertainties and effects of failure, typically three to four times higher than the industrial standard. Moreover, newly developed equations are presented linking performance analysis to the design criteria.
AB - In this study, the design aspects of optically accessible pressure vessels are investigated via a case study of a High Pressure Combustor experimental rig. The rig was designed to take optical measurements of combustion, simulating the conditions found in internal combustion engines and turbines. Although, it is not new to equip chambers and reactors with sight windows, important aspects of design and relevant information regarding optical access is missing or are insufficiently explored or not readily accessible in the existing literature. A comprehensive review of requirements for optical access to such high-pressure, high-temperature systems has been conducted. It is shown in a readily-navigable format as function of application and precision, with data and technical correlations hitherto not found in a ‘user-friendly’ style. The material selection procedure is detailed and supported by a complete comparison of optical materials and relevant properties. The review revealed a significant inconsistency in mechanical properties claimed in the literature for optical materials. As a response to this, increased safety factor values are suggested as function of level of uncertainties and effects of failure, typically three to four times higher than the industrial standard. Moreover, newly developed equations are presented linking performance analysis to the design criteria.
KW - Combustion
KW - Optical engine
KW - Optically-accessible reactor
KW - Pressure vessel
KW - Sapphire
KW - Window design
UR - http://www.scopus.com/inward/record.url?scp=85009089449&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2016.12.080
DO - 10.1016/j.matdes.2016.12.080
M3 - Article
AN - SCOPUS:85009089449
SN - 0264-1275
VL - 117
SP - 430
EP - 444
JO - Materials & Design
JF - Materials & Design
ER -