FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2266465240> ?p ?o ?g. }

• W2266465240 abstract "A considerable volume of electrical and electronic printed circuit boards are manufactured, by the punching process, from paper based and glass fibre re-inforced laminates. The effects, of the constituent elements of GFR laminate, upon the punching characteristics of the board were studied by means of a specially designed press dynamometer located within a standard press-tool die set used on a mechanical crank press. Both hot and cold punching techniques were developed initially by the use of commercially supplied samples of both paper and GFR laminates.Laboratory manufactured polyester laminates were produced with different resins, filler sizes and forms of glass fibre re-inforcement. These experimental boards were punched and analysed in respect to specific punching criteria and laminate punched quality. The punch quality (PQ) was assessed by a quanti tative technique using a magnified image of the punched contour and a graticule; the punch contour used was of a special design to incorporate the PQ requirements and provide the extreme crack propagation geometry. The surface density of the glass fibre re-inforcement was found to' be a primary factor influencing the main punch load and shear energy criteria used. The ladder stripping load required to remove the ladder from the punch was also investigated by means of a strain-gauged stripper-pad, and showed an important sensitivity to punching temperature, which could be utilized in industry when ladder stripping is a problem.Additional to the main programme of work already outlined above, a series of test punchings were also made at different punch velocities on three other sets of equipment, one of which was an Instron testing machine using a punch and die accessory conforming to BS.2782 requirements for shear testing of plastic sheet etc. From this basic Instron shear load information a simple mathematical model was developed to quantify the relative shear energy functions of the different punching equipments used; for the crank press die-set the specific shear energy (SSE) absorbed was found to be considerably higher than for the remainder of the test rigs used, thus some consideration was given to this result. One factor influencing this result was found to be related to the punch/die clearance deduced from the re-plotted -punch data. Some suggestions for future punching research work have been made, particularly in respect to die-set punching energy and small hole production which could be of great significance to industrial PCB manufacturers." @default.
• W2266465240 created "2016-06-24" @default.
• W2266465240 creator A5085391210 @default.
• W2266465240 date "1978-01-01" @default.
• W2266465240 modified "2023-09-23" @default.
• W2266465240 title "Studies in the punching of polyester glass laminates" @default.
• W2266465240 hasPublicationYear "1978" @default.
• W2266465240 type Work @default.
• W2266465240 sameAs 2266465240 @default.
• W2266465240 citedByCount "0" @default.
• W2266465240 crossrefType "dissertation" @default.
• W2266465240 hasAuthorship W2266465240A5085391210 @default.
• W2266465240 hasConcept C111106434 @default.
• W2266465240 hasConcept C119394753 @default.
• W2266465240 hasConcept C127413603 @default.
• W2266465240 hasConcept C159985019 @default.
• W2266465240 hasConcept C177229083 @default.
• W2266465240 hasConcept C192562407 @default.
• W2266465240 hasConcept C2778527123 @default.
• W2266465240 hasConcept C66938386 @default.
• W2266465240 hasConcept C78519656 @default.
• W2266465240 hasConceptScore W2266465240C111106434 @default.
• W2266465240 hasConceptScore W2266465240C119394753 @default.
• W2266465240 hasConceptScore W2266465240C127413603 @default.
• W2266465240 hasConceptScore W2266465240C159985019 @default.
• W2266465240 hasConceptScore W2266465240C177229083 @default.
• W2266465240 hasConceptScore W2266465240C192562407 @default.
• W2266465240 hasConceptScore W2266465240C2778527123 @default.
• W2266465240 hasConceptScore W2266465240C66938386 @default.
• W2266465240 hasConceptScore W2266465240C78519656 @default.
• W2266465240 hasLocation W22664652401 @default.
• W2266465240 hasOpenAccess W2266465240 @default.
• W2266465240 hasPrimaryLocation W22664652401 @default.
• W2266465240 hasRelatedWork W178459436 @default.
• W2266465240 hasRelatedWork W1893526751 @default.
• W2266465240 hasRelatedWork W2027080721 @default.
• W2266465240 hasRelatedWork W2045140638 @default.
• W2266465240 hasRelatedWork W2243312193 @default.
• W2266465240 hasRelatedWork W2288485587 @default.
• W2266465240 hasRelatedWork W2334320511 @default.
• W2266465240 hasRelatedWork W2507434546 @default.
• W2266465240 hasRelatedWork W2605145737 @default.
• W2266465240 hasRelatedWork W2736843410 @default.
• W2266465240 hasRelatedWork W2790339200 @default.
• W2266465240 hasRelatedWork W2915214144 @default.
• W2266465240 hasRelatedWork W2925174758 @default.
• W2266465240 hasRelatedWork W45021404 @default.
• W2266465240 hasRelatedWork W2317239529 @default.
• W2266465240 hasRelatedWork W2811541686 @default.
• W2266465240 hasRelatedWork W2820291039 @default.
• W2266465240 hasRelatedWork W2854660645 @default.
• W2266465240 hasRelatedWork W2875270526 @default.
• W2266465240 hasRelatedWork W2951700269 @default.
• W2266465240 isParatext "false" @default.
• W2266465240 isRetracted "false" @default.
• W2266465240 magId "2266465240" @default.
• W2266465240 workType "dissertation" @default.