MIL—STD—105E 英文版

AQL：ACCEPTABLE QUALITY LEVEL 。Acceptable quality level of the most common

AQL sampling standards is the United States military standard。

MIL—STD—105 D/E

version Serial number standard military

2 Sampling inspection way

Randomly selected samples from the group of a certain number , after inspection or testing, with its results compared them to the standard of criterion, and then determine the group is qualified or unqualified way is sampling inspection。

group sampling sample good products

degraded inspection

product The number of degraded product >standard:reject The number of degraded product ≤standard:accept 3.sampling inspection standard

Has decided to take the sample quantity and determining benchmark data table is sampling inspection standard

MIL - STD - 105 - D/E is the most commonly used two kinds of sampling standard, see the AQL tables.

ACCEPTABLE QUALITY LEVELS

Single Sampling Plans for Normal Inspection Sample Size Coed Letters Sample codⅠ Ⅱ Ⅲ e 0.010 0.015 0.025 0.040 0.065 0.10 0.15 0.25 0.40 0.65 1.0 1.5 2.5 4.6.0 5 10 Lot or batch size Sample size Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re 2–8 9–15 16–25 26–50 51–90 91–150 151–280 281–500 501–1200 1201–3200 3201–10000 10001–35000 35001–150000 150001–500000 500001 OVER A A B A B C B C D A B C D E F G H J K L M N P Q R 2 3 5 8 13 20 32 50 80 125 200 315 500 800 0 0 1 1 2 1 0 1 C D E C E F D F G E G H F H G J J K H K L J L M K M N 1 2 3 1 2 2 3 4 2 3 0 1 1 2 2 3 5 6 3 4 0 1 1 2 3 3 5 7 8 2 4 6 0 1 1 2 2 3 4 5 7 10 11 3 6 8 0 1 1 2 2 3 3 5 6 7 10 14 15 4 8 11 0 1 1 2 2 3 3 4 5 7 8 10 14 21 22 6 11 15 0 1 1 2 2 3 3 4 5 6 7 10 14 21 8 11 15 22 0 1 1 2 2 3 3 4 5 6 7 8 10 14 21 11 15 22 0 1 1 2 2 3 3 4 5 6 7 8 10 11 14 21 21 22 0 1 1 2 2 3 3 4 5 6 7 8 10 11 14 15 15 0 1 0 1 125 21 22 0 1 1 2 2 3 3 4 5 6 7 8 10 11 14 15 0 22 2000 1 2 2 3 3 4 5 6 7 8 10 11 14 15 21 22 ：Use the arrow below the first sampling standard, if the sampling number greater than or equal L N P to the batch number do 100% inspection M P Q ：Use the arrow above the first sampling standard N Q R Ac=Acceptance number Re= Rejection number The content of the AQL table as follows：

The first column of the sample data classification

The second column is the general inspection level: Ⅰ Ⅱ Ⅲ The third column is the sample code, use A, B, C...show

The fourth column is sample code the number of sample size After each column is the different levels of QAL values

To pay attention to in the table and it has pointed out the direction of the arrow, in case of fault. I suggest this AQL value 4.AQL steps of application 4.1 Comfirm the sample products and sampling inspection characteristics 4.2 Determine the level of inspection, generally to \"Ⅱ\" class 4.3 To determine the AQL value, such as: the MAJOR \"0.65\。 4.4according to the LOT or batch size，comfirm the sample code。 4.5according to sample code，comfirm the sample size。 4.6 inspect the samples，write down the result。

4.7 according to AQL standard，judging the product is accepted or not。

5.Inspection level distinction

general inspection level

tightened inspection reduced inspection

5.1 General inspection ：normal condition take this level，inspection level take”Ⅱ”. 5.2 Tightened inspection:When two batch of five consecutive batch are rejected，taking the tightened inspection ，inspection level“Ⅲ”。

5.3 Reduced inspection：When 10 consecutive batch are all accepted ，taking the reduced inspection，inspection level“Ⅰ”。

5.4 In tightened inspection level，if the quality is improved and five consecutive batch are accepted，we can return to general inspection。on the contrary refuse inspection and rectification measure must be taken。

5.5 In reduce inspection if unqualified product have been founded，we can return to general inspection。

5.6 The tightened and reduced level and other appropriate increase and decrement inspection measures, etc.。