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Reliability test

Testing

Reliability test

Reliability Test Background Introduction

Tests to measure, verify or improve product reliability are called reliability tests, which are an important part of product reliability work.

Generally, the purpose of reliability testing of products is as follows:

(1) Make the product reach the predetermined reliability index in the development stage. In order to make the product reach the predetermined reliability index, it is necessary to conduct a reliability test on the sample during the development stage, so as to find out the problems existing in the product in terms of raw materials, structure, process, environmental adaptability, etc., and improve it. After repeated tests With improvement, the reliability indicators of the product can be continuously improved to meet the predetermined requirements.

(2) Carry out reliability appraisal during product development and finalization. When a new product is developed and finalized, an identification test should be carried out according to the product standard (or product technical conditions), so as to comprehensively assess whether the product reaches the specified reliability index.

(3) Control the quality of products in the production process. In order to produce products stably, it is sometimes necessary to carry out reliability tests for each product according to the items specified in the product technical conditions. In addition, reliability sampling tests need to be carried out batch by batch or according to a certain period of time. Through the reliability test of the product, the stability of the product quality can be known. If the product quality declines due to poor raw material quality or out-of-control process, it can be reflected in the product reliability test, so that corrective measures can be taken in time to restore the product quality to normal.

(4) Screening of products to improve the reliability level of the whole batch of products. Reasonable screening can eliminate early failure products caused by various reasons (such as defective raw materials, improper process measures, negligence of operators, failure of production equipment and lax quality inspection, etc.), thereby improving the reliability of the whole batch of products. Level.

(5) Study the failure mechanism of the product. Through the reliability test of the product (including simulation test and field use test), the failure mode and failure law of the product under different environments and different stress conditions can be understood. Through the analysis of the failed product, the internal cause of product failure (ie failure mechanism) and the weak link of the product can be found out, so that corresponding measures can be taken to improve the reliability level of the product.

Climate and environmental testing:

Test items	Guideline	Ability range
low temperature test	GB/T 2423.1-2008; IEC 60068-2-1: 2007 EN 60068-2-1: 2007	-40℃，1m×1m×1m
High temperature test	GB/T 2423.2-2008; IEC 60068-2-2: 2007 EN 60068-2-2: 2007	+150℃，0.5m³
Constant Damp Heat Test	GB/T 2423.3-2016; IEC 60068-2-78: 2012 EN 60068-2-78: 2013	temperature range：-40℃~150℃ Humidity range：20%RH~98%RH；1m×1m×1m
Alternating Damp Heat Test	GB/T 2423.4-2008; IEC 60068-2-30: 2005 EN 60068-2-30: 2005 GB/T 2423.34-2012; IEC 60068-2-38: 2009 EN 60068-2-38: 2009	temperature range：-40℃~150℃；Humidity range：20%RH~98%RH；1m×1m×1m
Salt spray test	GB/T 2423.17-2008; IEC 60068-2-11:1981 EN 60068-2-11:1999	Equipment capacity：90L
IP rating (waterproof and dustproof test)	GB/T 4208-2017 IEC 60529-1989+Amd 1-1999+Amd 2-2013+Cor 2-	IPX1~IPX8; IP1X~IP6X

Mechanical inspection:

Test items	Guideline	Ability range
Vibration test	GB/T 2423.10-2008; IEC 60068-2-6: 2007 EN 60068-2-6: 2008; GB/T 2423.56-2006 IEC 60068-2-64: 2008;EN 60068-2-64: 2008	maximum thrust：3kN；maximum acceleration：1000m/s² Frequency Range：5Hz~2000Hz；maximum displacement：25mm table top load：120kg
Mechanical Shock Test	GB/T 2423.5-1995; IEC 60068-2-27: 2008 EN 60068-2-27: 2009	Half-sine wave; shock acceleration range：150~15000m/s² pulse duration：0.5~18ms；table top load：5kg Work surface size： 200×200mm
drop test	GB/T 2423.8-1995; IEC 60068-2-31: 2008 EN 60068-2-31: 2008	drop height：30~150cm；table top load：70kg
IK test (protection level of enclosure against external mechanical impact)	GB/T 20138-2006; IEC 62262: 2002 EN 62262: 2002	impact energy：5J，10J，20J

Combustion detection:

Test items	Guideline
Glow Wire Test	GB/T 5169.10-2006; GB/T 5169.11-2006; GB/T 5169.12-2013; GB/T 5169.13-2006 IEC 60695-2-10:2013; IEC 60695-2-11:2014 IEC 60695-2-12:2010+A1: 2014; IEC 60695-2-13:2010+A1: 2014 EN 60695-2-10:2013; EN 60695-2-11:2014 EN 60695-2-12:2010+A1: 2014; EN 60695-2-13:2010+A1: 2013
Needle flame test	GB/T 5169.5-2008; GB/T 5169.16-2008; GB/T 5169.17-2008 IEC 60695-11-5:2016; IEC 60695-11-10: 2013; IEC 60695-11-20: 2015 EN 60695-11-5: 2017; EN 60695-11-10:2013; EN 60695-11-20:2015
Tracking test	GB/T 4207-2012; IEC 60112:2003+A1: 2009; EN 60112:2003+A1: 2009
Horizontal combustion test	UL94; GB/T 2408-2008
vertical burning test	UL94; GB/T 2408-2008

Other tests:

Test items	Guideline
Pressure test	GB/T 1408.1-2016; ASTM D149-2009(2013); IEC 61180-1-2010; GB/T 17627.1-1998
Roller drop test	GB/T 2423.8-1995; IEC 60068-2-32-2007
Wire bend test	IEC 60335-1-2010/Amd 2-2016/Cor 1-2016; GB/T 2099.1-2008
Ball pressure test	GB/T 5169.21-2006; IEC 60695-10-2: 2014; EN 60695-10-2:2014
temperature rise test	Enterprise standards
Chemical resistance test	Enterprise standards
Plug test	Enterprise standards

IT products and peripherals: mobile phones, tablet computers, walkie-talkies, mice, keyboards, speakers, etc.;

Wearable electronic products: headset/Bluetooth headset, smart watch/band, VR glasses, etc.;

Car electronic products: car navigation, driving recorder, car camera, T-box, dashboard, car charger, car display, car lights, window control system, central control, etc.;

Electronic components: resistors, inductors, capacitors, PCB, etc.;

Household electronic products: cameras, TV sets, lamps, power adapters, etc.;

Non-charged products: mobile phone sets/bags, packing boxes, wiring harnesses, connectors, hardware products, etc.;

Other products: plastics, rubber, leather, textiles, tapes, automotive interior and exterior trim, etc.