As discussed in the previous meeting, we upload 13 gaps in the database. 30 gaps with RE4/2 types with Batch 12 HPLs. Destroyed ~ 20 gaps to investigate.

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Presentation transcript:

As discussed in the previous meeting, we upload 13 gaps in the database. 30 gaps with RE4/2 types with Batch 12 HPLs. Destroyed ~ 20 gaps to investigate the inside oil condition. Problem ! In the test step for leak & pop spacers test, the current rejection limits seem to be too tight. We have to take into account pressure & temperature variation of the test laboratory. The pressure measured by the sensor is the gauge pressure p – p 0, NOT absolute pressure. 1. Variation of p 0 outside 2. Variation of T of air inside the gap ∆T = 0.1 o during the 10 minutes causes a pressure variation ~ 0.33 hPa. 0.2 hPa would be an uncontrollable amount. The proper rejection limits seem to be RE4/2 TW: 0.3 hPa, RE4/2 TN: 0.3 hPa, RE4/2 B: 0.4 hPa RE4/3 TW: 0.3 hPa, RE4/3 TN: 0.4 hPa, RE4/3 B: 0.5 hPa Discussion for QC steps Leak & Pop Spacers

KODEL-TEST-RE4-2-B004KODEL-TEST-RE4-2-B005KODEL-TEST-RE4-2-B006 KODEL-TEST-RE4-2-B007KODEL-TEST-RE4-2-B008KODEL-TEST-RE4-2-B009 KODEL-TEST-RE4-2-B010 RE4/2 bottom (large gaps)

KODEL-TEST-RE4-2-TN004KODEL-TEST-RE4-2-TN005 KODEL-TEST-RE4-2-TN006KODEL-TEST-RE4-2-TN008 KODEL-TEST-RE4-2-TW004KODEL-TEST-RE4-2-TW006 RE4/2 Top wide (small gaps) RE4/2 Top narrow (mid-sized gaps)