{"id":"https://openalex.org/A5075813652","orcid":"https://orcid.org/0009-0006-7372-3092","observed_orcids":["https://orcid.org/0009-0006-7372-3092"],"display_name":"Johan Birnie","raw_author_names":["Birnie, Johan","Johan Birnie","Johan Birnie Hernandez","Johan Birnie Hern\u00e1ndez"],"full_name":"Johan Birnie","works_count":12,"cited_by_count":52,"summary_stats":{"2yr_mean_citedness":5.111111111111111,"h_index":3,"i10_index":1},"ids":{"openalex":"https://openalex.org/A5075813652","orcid":"https://orcid.org/0009-0006-7372-3092","observed_orcids":["https://orcid.org/0009-0006-7372-3092"]},"affiliations":[{"institution":{"id":"https://openalex.org/I91044043","ror":"https://ror.org/03nyjqm54","display_name":"Universidad del Valle de Guatemala","country_code":"GT","type":"education","lineage":["https://openalex.org/I91044043"]},"years":[2023]},{"institution":{"id":"https://openalex.org/I9360294","ror":"https://ror.org/01111rn36","display_name":"University of Bologna","country_code":"IT","type":"education","lineage":["https://openalex.org/I9360294"]},"years":[2026,2025,2024]}],"last_known_institutions":[{"id":"https://openalex.org/I9360294","ror":"https://ror.org/01111rn36","display_name":"University of Bologna","country_code":"IT","type":"education","lineage":["https://openalex.org/I9360294"]}],"topics":[{"id":"https://openalex.org/T10219","display_name":"Mechanical Behavior of Composites","count":9,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10396","display_name":"Fatigue and fracture mechanics","count":5,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11664","display_name":"Fiber-reinforced polymer composites","count":5,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10707","display_name":"Cellular and Composite Structures","count":4,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12449","display_name":"Spacecraft Design and Technology","count":3,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13436","display_name":"Space Technology and Applications","value":3.64e-05,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14445","display_name":"Transportation Safety and Impact Analysis","value":2.76e-05,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11664","display_name":"Fiber-reinforced polymer composites","value":2.56e-05,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10219","display_name":"Mechanical Behavior of Composites","value":2.11e-05,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10707","display_name":"Cellular and Composite Structures","value":1.95e-05,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.91839998960495},{"id":"159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","score":0.7843000292778015},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.6766572594642639},{"id":"66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","score":0.5357999801635742},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.3107999861240387}],"counts_by_year":[{"year":2018,"works_count":2,"oa_works_count":1,"cited_by_count":4},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":2},{"year":2024,"works_count":1,"oa_works_count":1,"cited_by_count":2},{"year":2025,"works_count":5,"oa_works_count":5,"cited_by_count":44},{"year":2026,"works_count":3,"oa_works_count":3,"cited_by_count":0}],"display_name_alternatives":["Birnie, Johan","Johan Birnie","Johan Birnie Hernandez","Johan Birnie Hern\u00e1ndez"],"block_key":"j birnie","works_api_url":"https://api.openalex.org/works?filter=author.id:A5075813652","updated_date":"2026-10-12T12:34:37","created_date":"2025-10-10T00:00:00"}