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André Gonçalves Bidá Profile picture
André Gonçalves Bidá
@andre_bida
STEM enthusiast. Materials Scientist and Engineer. Failure Analysis and Root Cause Investigations. Parametric and non-parametric statistics.
Oct 15, 2022 • 21 tweets • 9 min read
1. Crimea Bridge explosion occurred 1 week ago.
It will disrupt dramatically Russian invasion logistics through their main and safest route. Follow a longer 🧶 to evaluate the damage at Crimea Bridge, from a failure analysis engineering perspective.
#CrimeaBridge
#Engineering 2. How long repairs will take? That's the key question.
In order to try to answer is necessary understand, considering the bridge design and construction aspects, damage details, evaluate possible structural damages, in order to access how complex such repair will be.
Oct 11, 2022 • 7 tweets • 6 min read
@Osinttechnical I am a materials engineer specialized in metallic materials and failure analysis.
Nice videos. It can help to understand somehow damage the fire caused.
🧶
First we need understand this is not one railway bridge. Are 2 railroad bridges, side by side, additionally to road bridges. @Osinttechnical In the Crimea Bridge design, each girders shares same pier cap, on top of double piers. Based on construction pictures, ballast decks are done of steel, with a concrete slab and curb to bed the rail track on top of double I beams. ImageImageImageImage
Jan 20, 2021 • 11 tweets • 8 min read
@cnpaiva @mab_sp125 Claudia, este trabalho da Lagier tem umas coisas bem estranhas.
Bruno, sou das exatas. Se falar bobagem, me corrija!
Vou pontuar detalhes que, para mim, não passariam numa revisão de artigo (PS: sou revisor da ASQ). O fio vai ser meio longo. @cnpaiva @mab_sp125 Aqui é 1° trecho do artigo que eu torço o nariz: “não alocado randomicamente, mas...”. Não-aleatório na estatística pode, mas é terreno perigoso.