Comparison of pyrometry and thermography for thermal analysis of thermite reactions
This study examines the thermal behavior of a laser ignited thermite composed of aluminum and bismuth trioxide. Temperature data were collected during the reaction using a four-color pyrometer and a high-speed color camera modified for thermography. The two diagnostics were arranged to collect data...
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| Veröffentlicht in: | Applied optics (2004) 2021-06, Vol.60 (16), p.4976-4985 |
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| container_title | Applied optics (2004) |
| container_volume | 60 |
| creator | Woodruff, Connor Dean, Steven W. Pantoya, Michelle L. |
| description | This study examines the thermal behavior of a laser ignited thermite
composed of aluminum and bismuth trioxide. Temperature data were
collected during the reaction using a four-color pyrometer and a
high-speed color camera modified for thermography. The two diagnostics
were arranged to collect data simultaneously, with similar fields of
view and with similar data acquisition rates, so that the two
techniques could be directly compared. Results show that at initial
and final stages of the reaction, a lower signal-to-noise ratio
affects the accuracy of the measured temperatures. Both diagnostics
captured the same trends in transient thermal behavior, but the
average temperatures measured with thermography were about 750 K
higher than those from the pyrometer. This difference was attributed
to the lower dynamic range of the thermography camera’s image sensor,
which was unable to resolve cooler temperatures in the field of view
as well as the photomultiplier tube sensors in the pyrometer. Overall,
while the camera could not accurately capture the average temperature
of a scene, its ability to capture peak temperatures and spatial data
make it the preferred method for tracking thermal behavior in thermite
reactions. |
| doi_str_mv | 10.1364/AO.423924 |
| format | Article |
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composed of aluminum and bismuth trioxide. Temperature data were
collected during the reaction using a four-color pyrometer and a
high-speed color camera modified for thermography. The two diagnostics
were arranged to collect data simultaneously, with similar fields of
view and with similar data acquisition rates, so that the two
techniques could be directly compared. Results show that at initial
and final stages of the reaction, a lower signal-to-noise ratio
affects the accuracy of the measured temperatures. Both diagnostics
captured the same trends in transient thermal behavior, but the
average temperatures measured with thermography were about 750 K
higher than those from the pyrometer. This difference was attributed
to the lower dynamic range of the thermography camera’s image sensor,
which was unable to resolve cooler temperatures in the field of view
as well as the photomultiplier tube sensors in the pyrometer. Overall,
while the camera could not accurately capture the average temperature
of a scene, its ability to capture peak temperatures and spatial data
make it the preferred method for tracking thermal behavior in thermite
reactions.</description><identifier>ISSN: 1559-128X</identifier><identifier>EISSN: 2155-3165</identifier><identifier>EISSN: 1539-4522</identifier><identifier>DOI: 10.1364/AO.423924</identifier><language>eng</language><publisher>Washington: Optical Society of America</publisher><subject>Aluminum ; Bismuth trioxide ; Cameras ; Color ; Data collection ; Field of view ; Photomultiplier tubes ; Pyrometry ; Signal to noise ratio ; Spatial data ; Thermal analysis ; Thermodynamic properties ; Thermography</subject><ispartof>Applied optics (2004), 2021-06, Vol.60 (16), p.4976-4985</ispartof><rights>Copyright Optical Society of America Jun 1, 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c352t-718d11be0e6c370a61fc635d2ea1ce6a0d7a7be8d68bf36fe454db0af3d084073</citedby><cites>FETCH-LOGICAL-c352t-718d11be0e6c370a61fc635d2ea1ce6a0d7a7be8d68bf36fe454db0af3d084073</cites><orcidid>0000-0003-0299-1832 ; 0000000302991832</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3245,27901,27902</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1785403$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Woodruff, Connor</creatorcontrib><creatorcontrib>Dean, Steven W.</creatorcontrib><creatorcontrib>Pantoya, Michelle L.</creatorcontrib><title>Comparison of pyrometry and thermography for thermal analysis of thermite reactions</title><title>Applied optics (2004)</title><description>This study examines the thermal behavior of a laser ignited thermite
composed of aluminum and bismuth trioxide. Temperature data were
collected during the reaction using a four-color pyrometer and a
high-speed color camera modified for thermography. The two diagnostics
were arranged to collect data simultaneously, with similar fields of
view and with similar data acquisition rates, so that the two
techniques could be directly compared. Results show that at initial
and final stages of the reaction, a lower signal-to-noise ratio
affects the accuracy of the measured temperatures. Both diagnostics
captured the same trends in transient thermal behavior, but the
average temperatures measured with thermography were about 750 K
higher than those from the pyrometer. This difference was attributed
to the lower dynamic range of the thermography camera’s image sensor,
which was unable to resolve cooler temperatures in the field of view
as well as the photomultiplier tube sensors in the pyrometer. Overall,
while the camera could not accurately capture the average temperature
of a scene, its ability to capture peak temperatures and spatial data
make it the preferred method for tracking thermal behavior in thermite
reactions.</description><subject>Aluminum</subject><subject>Bismuth trioxide</subject><subject>Cameras</subject><subject>Color</subject><subject>Data collection</subject><subject>Field of view</subject><subject>Photomultiplier tubes</subject><subject>Pyrometry</subject><subject>Signal to noise ratio</subject><subject>Spatial data</subject><subject>Thermal analysis</subject><subject>Thermodynamic properties</subject><subject>Thermography</subject><issn>1559-128X</issn><issn>2155-3165</issn><issn>1539-4522</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpdkctOwzAQRS0EEuWx4A8i2MAixW-ny6riJVXqApDYWY4zpqmSONjuIn9P2rBiNaM7Z0Z3dBG6IXhOmOSPy82cU7ag_ATNKBEiZ0SKUzQb20VOaPF1ji5i3GHMBF-oGXpf-bY3oY6-y7zL-iH4FlIYMtNVWdpCaP13MP12yJwPk2CacWiaIdbxsHLU6gRZAGNT7bt4hc6caSJc_9VL9Pn89LF6zdebl7fVcp1bJmjKFSkqQkrAIC1T2EjirGSiomCIBWlwpYwqoahkUTomHXDBqxIbxypccKzYJbqd7vqYah3taMJure86sEkTVQiO2QjdT1Af_M8eYtJtHS00jenA76OmgjPOmSJiRO_-oTu_D-OrR4pyXnBFR-phomzwMQZwug91a8KgCdaHDPRyo6cM2C8IxHlQ</recordid><startdate>20210601</startdate><enddate>20210601</enddate><creator>Woodruff, Connor</creator><creator>Dean, Steven W.</creator><creator>Pantoya, Michelle L.</creator><general>Optical Society of America</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-0299-1832</orcidid><orcidid>https://orcid.org/0000000302991832</orcidid></search><sort><creationdate>20210601</creationdate><title>Comparison of pyrometry and thermography for thermal analysis of thermite reactions</title><author>Woodruff, Connor ; Dean, Steven W. ; Pantoya, Michelle L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c352t-718d11be0e6c370a61fc635d2ea1ce6a0d7a7be8d68bf36fe454db0af3d084073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aluminum</topic><topic>Bismuth trioxide</topic><topic>Cameras</topic><topic>Color</topic><topic>Data collection</topic><topic>Field of view</topic><topic>Photomultiplier tubes</topic><topic>Pyrometry</topic><topic>Signal to noise ratio</topic><topic>Spatial data</topic><topic>Thermal analysis</topic><topic>Thermodynamic properties</topic><topic>Thermography</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Woodruff, Connor</creatorcontrib><creatorcontrib>Dean, Steven W.</creatorcontrib><creatorcontrib>Pantoya, Michelle L.</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Applied optics (2004)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Woodruff, Connor</au><au>Dean, Steven W.</au><au>Pantoya, Michelle L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of pyrometry and thermography for thermal analysis of thermite reactions</atitle><jtitle>Applied optics (2004)</jtitle><date>2021-06-01</date><risdate>2021</risdate><volume>60</volume><issue>16</issue><spage>4976</spage><epage>4985</epage><pages>4976-4985</pages><issn>1559-128X</issn><eissn>2155-3165</eissn><eissn>1539-4522</eissn><abstract>This study examines the thermal behavior of a laser ignited thermite
composed of aluminum and bismuth trioxide. Temperature data were
collected during the reaction using a four-color pyrometer and a
high-speed color camera modified for thermography. The two diagnostics
were arranged to collect data simultaneously, with similar fields of
view and with similar data acquisition rates, so that the two
techniques could be directly compared. Results show that at initial
and final stages of the reaction, a lower signal-to-noise ratio
affects the accuracy of the measured temperatures. Both diagnostics
captured the same trends in transient thermal behavior, but the
average temperatures measured with thermography were about 750 K
higher than those from the pyrometer. This difference was attributed
to the lower dynamic range of the thermography camera’s image sensor,
which was unable to resolve cooler temperatures in the field of view
as well as the photomultiplier tube sensors in the pyrometer. Overall,
while the camera could not accurately capture the average temperature
of a scene, its ability to capture peak temperatures and spatial data
make it the preferred method for tracking thermal behavior in thermite
reactions.</abstract><cop>Washington</cop><pub>Optical Society of America</pub><doi>10.1364/AO.423924</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-0299-1832</orcidid><orcidid>https://orcid.org/0000000302991832</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1559-128X |
| ispartof | Applied optics (2004), 2021-06, Vol.60 (16), p.4976-4985 |
| issn | 1559-128X 2155-3165 1539-4522 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1785403 |
| source | Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | Aluminum Bismuth trioxide Cameras Color Data collection Field of view Photomultiplier tubes Pyrometry Signal to noise ratio Spatial data Thermal analysis Thermodynamic properties Thermography |
| title | Comparison of pyrometry and thermography for thermal analysis of thermite reactions |
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