Characterisation of the damaging micromechanisms in a pearlitic ductile cast iron and damage assessment by acoustic emission testing
The damaging micromechanisms in a pearlitic (EN‐GJS700‐2) ductile cast iron (DCI) are investigated by means of scanning electron microscope (SEM) analysis and acoustic emission (AE) testing. Monotonic uniaxial tensile tests are performed on microtensile specimens under strain control. SEM analysis i...
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| Veröffentlicht in: | Fatigue & fracture of engineering materials & structures 2020-05, Vol.43 (5), p.1038-1050 |
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| container_title | Fatigue & fracture of engineering materials & structures |
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| creator | D'Angela, Danilo Ercolino, Marianna Bellini, Costanzo Di Cocco, Vittorio Iacoviello, Francesco |
| description | The damaging micromechanisms in a pearlitic (EN‐GJS700‐2) ductile cast iron (DCI) are investigated by means of scanning electron microscope (SEM) analysis and acoustic emission (AE) testing. Monotonic uniaxial tensile tests are performed on microtensile specimens under strain control. SEM analysis is applied under in situ conditions by means of a tensile holder. The multiple damaging micromechanisms are identified, and their evolution along with the mechanical response is characterised. The traditional AE features are found to be qualitatively correlated to the onset of the fracture damage over the elastic behaviour. The information entropy of the AEs evaluated according to both Shannon and Kullback‐Leibler formulations is proven to be well correlated to the ongoing damage and the incipient failure. Tentative failure criteria are finally proposed. The assessment approach is found to be promising for structural health monitoring purposes. |
| doi_str_mv | 10.1111/ffe.13214 |
| format | Article |
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Monotonic uniaxial tensile tests are performed on microtensile specimens under strain control. SEM analysis is applied under in situ conditions by means of a tensile holder. The multiple damaging micromechanisms are identified, and their evolution along with the mechanical response is characterised. The traditional AE features are found to be qualitatively correlated to the onset of the fracture damage over the elastic behaviour. The information entropy of the AEs evaluated according to both Shannon and Kullback‐Leibler formulations is proven to be well correlated to the ongoing damage and the incipient failure. Tentative failure criteria are finally proposed. 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The assessment approach is found to be promising for structural health monitoring purposes.</description><subject>Acoustic emission testing</subject><subject>Acoustic measurement</subject><subject>Acoustic microscopy</subject><subject>Cast iron</subject><subject>Damage assessment</subject><subject>Damage detection</subject><subject>damage mechanics</subject><subject>Elasticity</subject><subject>Emission analysis</subject><subject>Entropy (Information theory)</subject><subject>Mechanical analysis</subject><subject>Nodular iron</subject><subject>Scanning electron microscopy</subject><subject>Strain analysis</subject><subject>Structural health monitoring</subject><subject>structural integrity assessment</subject><subject>Tensile tests</subject><issn>8756-758X</issn><issn>1460-2695</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kEFLAzEQhYMoWKsH_0HAk4dtk83uJnuU0qpQ8KLgLYzZSZvS3a1JFundH27qenUuw8D33mMeIbeczXiaubU44yLnxRmZ8KJiWV7V5TmZKFlWmSzV-yW5CmHHGK8KISbke7EFDyaidwGi6zvaWxq3SBtoYeO6DW2d8X2LZgudC22grqNADwh-76IztBlMdHukBkKkzicD6JpRjRRCwBBa7CL9OFIw_RBOGmxdCKesiOnuNtfkwsI-4M3fnpK31fJ18ZStXx6fFw_rzAiRF1lZC87B5lbWskFEIXmjpKiNUKgYq_JCQoNGQGEgF0xI4KhqaXNZcl5YJabkbvQ9-P5zSNl61w--S5E6F6qqeMVYmaj7kUp_h-DR6oN3Lfij5kyfStapZP1bcmLnI_uVOjj-D-rVajkqfgAhWn_E</recordid><startdate>202005</startdate><enddate>202005</enddate><creator>D'Angela, Danilo</creator><creator>Ercolino, Marianna</creator><creator>Bellini, Costanzo</creator><creator>Di Cocco, Vittorio</creator><creator>Iacoviello, Francesco</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><orcidid>https://orcid.org/0000-0003-4804-6588</orcidid><orcidid>https://orcid.org/0000-0002-9382-6092</orcidid><orcidid>https://orcid.org/0000-0002-1668-3729</orcidid></search><sort><creationdate>202005</creationdate><title>Characterisation of the damaging micromechanisms in a pearlitic ductile cast iron and damage assessment by acoustic emission testing</title><author>D'Angela, Danilo ; Ercolino, Marianna ; Bellini, Costanzo ; Di Cocco, Vittorio ; Iacoviello, Francesco</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3324-59311af2f797deee371d8739c38e8006247adec3a4ca23037a1e897f275114f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Acoustic emission testing</topic><topic>Acoustic measurement</topic><topic>Acoustic microscopy</topic><topic>Cast iron</topic><topic>Damage assessment</topic><topic>Damage detection</topic><topic>damage mechanics</topic><topic>Elasticity</topic><topic>Emission analysis</topic><topic>Entropy (Information theory)</topic><topic>Mechanical analysis</topic><topic>Nodular iron</topic><topic>Scanning electron microscopy</topic><topic>Strain analysis</topic><topic>Structural health monitoring</topic><topic>structural integrity assessment</topic><topic>Tensile tests</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>D'Angela, Danilo</creatorcontrib><creatorcontrib>Ercolino, Marianna</creatorcontrib><creatorcontrib>Bellini, Costanzo</creatorcontrib><creatorcontrib>Di Cocco, Vittorio</creatorcontrib><creatorcontrib>Iacoviello, Francesco</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Fatigue & fracture of engineering materials & structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>D'Angela, Danilo</au><au>Ercolino, Marianna</au><au>Bellini, Costanzo</au><au>Di Cocco, Vittorio</au><au>Iacoviello, Francesco</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterisation of the damaging micromechanisms in a pearlitic ductile cast iron and damage assessment by acoustic emission testing</atitle><jtitle>Fatigue & fracture of engineering materials & structures</jtitle><date>2020-05</date><risdate>2020</risdate><volume>43</volume><issue>5</issue><spage>1038</spage><epage>1050</epage><pages>1038-1050</pages><issn>8756-758X</issn><eissn>1460-2695</eissn><abstract>The damaging micromechanisms in a pearlitic (EN‐GJS700‐2) ductile cast iron (DCI) are investigated by means of scanning electron microscope (SEM) analysis and acoustic emission (AE) testing. 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| ispartof | Fatigue & fracture of engineering materials & structures, 2020-05, Vol.43 (5), p.1038-1050 |
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| subjects | Acoustic emission testing Acoustic measurement Acoustic microscopy Cast iron Damage assessment Damage detection damage mechanics Elasticity Emission analysis Entropy (Information theory) Mechanical analysis Nodular iron Scanning electron microscopy Strain analysis Structural health monitoring structural integrity assessment Tensile tests |
| title | Characterisation of the damaging micromechanisms in a pearlitic ductile cast iron and damage assessment by acoustic emission testing |
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