Pourquoi ce travail est dans la base
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Notice bibliographique
Résumé
ABSTRACT When searching for common industry-accepted test methods to determine the cleanliness of printed wiring boards and assemblies, most manufacturer's turn to IPC (Association Connecting Electronic Industries) for guidance. It is common to use IPC-A-610 (Acceptability of Electronic Assemblies) as well as IPC TM 650 (Test Methods of Electronic Assemblies) and it's methods to benchmark the cleanliness or contamination of a process and product. Unfortunately, a chart listing contamination levels for a specific flux and process does not exist. Contamination can lead to electromigration risk, dendrite growth and subsequent product reliability issues. There are several common, accepted techniques (R.O.S.E. (Resistivity of Solvent Extract)) and modified R.O.S.E. test, SIR test, Ion Chromatography, water-drop-across-trace test, and others). However, there is little consensus as to which test is the best measure of PWB or assembly contamination or cleanliness as well as the test result correlation to long-term reliability. In the 1980s, prior to the Montreal Protocol and subsequent phase-out of CFCs, manufacturers could rely on CFCs and vapor phase reflow to meet soldering requirements. The eventual move away from RMA fluxes, replacement of vapor phase soldering with reflow and the continual miniaturization of electronics has made the focus on contamination and its link to product reliability more important than ever. Dozens of pastes, fluxes, and cleaning materials, as well as continued miniaturization of packaging and designs further complicate matters. This report hopes to achieve several goals: Determine the link between bare PWB contamination, soldered assembly contamination and long-term product reliability. Establish measurable limits for bare PWB cleanliness as well as process control limits for both an aqueous as well as a water-soluble soldering process. Determine whether there is any correlation between common, industry-accepted rose/modified rose (omegameter/ionograph type) testing and long term product reliability. Determine the effect PWB plating finish (HASL, Immersion Silver and Cu OSP) has on both bare PWB contamination as well as soldered assembly in a no clean and water soluble process. Determine whether there is a link between percentage of saponifier used to wash soldered assemblies and long-term reliability. Establish a more cost-effective test for manufacturers to use as a process-monitoring tool.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle