Spherical Bend Test Failure Criteria Correlation in Compliant Systems
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
ABSTRACT The incidence of Pad Crater damage in Pb-free assemblies continues to be a concern for many manufacturers and end users of electronic assemblies. Some package designers now routinely include non functional pins at the corners of fine pitch area array components. There are various other mitigation techniques in common use depending on the industry sector. Several Telecom sector companies now routinely include some level of mechanical material or application characterization in their ongoing process verification and package introduction procedures. This activity is required because qualification or characterization data is not available. The characterizations that have been completed are specific to package type or design, board resin system and usually even board thickness. In an effort to generate more data an investigative team from the High Density Packaging Users Group (HDPUG) is working to rank many materials by performance using a commonly available over molded ball grid array (BGA) package and a cost effective board thickness. These design parameters were required due to the large number of laminate resin systems in the study. However, the geometry and compliance of these sample assemblies will be quite different from the material combinations that are commonly problematic in actual manufacturing and service life conditions. This paper describes a test program designed to investigate the correlation between these new sample geometries and existing data generated with the investigator’s established test methodology and product representative material sets. Additionally we will examine the correlations between our existing test methods and those employed by HDPUG. The study includes one widely implemented filled epoxy resin system and two other common mid and low loss materials for which test data already exists. The intent is to highlight and separate differences driven by material sets and those induced by test methodology.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it