mechanical properties testing-凯发k8国际首页登录

mechanical properties testing

mechanical properties of materials refer to the mechanical characteristics of materials when subjected to various applied loads (tensile, compression, bending, torsion, impact, alternating stress, etc.) under different environments (temperature, media, humidity).

 

mechanical property testing is used as a key element in the evaluation of material properties in industries such as textile and apparel, shoes and bags, building materials, electronics and electrical appliances, industrial manufacturing, aerospace, rail transportation, automobiles and parts, and medical devices. through mechanical property testing, we can grasp its use performance, so as to achieve the best economy; mechanical property is also the main basis for mechanical parts design and material selection, so as to provide guidance for product optimization design and scheme; mechanical property is also the key parameter to evaluate whether the material meets the corresponding standard requirements and protect the interests of customers in trade; mechanical property testing is also the key data for production process quality control and new material mechanical properties are also key data for quality control of production process and research and development of new materials.

 

noa has the capability of physical testing of various polymer materials, including density, hardness, tensile, bending, impact, compression, dsc, tga, melt flow rate, low temperature embrittlement, heat deflection temperature, vicat softening temperature, ash content, etc. its testing methods cover the requirements of international standards (iso), national standards (gb) and other standards, for the range of objects including pc, abs, pp, pe, ldpe and hdpe, ldpe and hdpe and other materials. we can also provide a series of tests to identify and test the performance and process performance of metallic and non-metallic materials. the tests can help customers evaluate the mechanical properties of materials and identify weaknesses in the use of materials.

 

noa has a central laboratory of 30,000m2 and has obtained cma and cnas qualification. through experienced technicians, we provide detailed technical consulting solutions and offer a variety of complete test experiments to ensure accurate and reliable test results.

 

service content

physical laboratory construction has mechanical properties, light aging resistance, weather resistance, corrosion resistance, thermal properties, combustion properties experimental capabilities, to provide customers with analysis and testing services.

 

1. service products

service products

common products

steel materials

carbon steel, stainless steel, heat-resistant steel, alloy steel, cast iron, etc.

special metal materials

functional alloys, metal matrix composites, etc.

other metal products

profiles, plates, wires, pipes, fasteners, castings, automotive parts, machinery and components, etc.

non-ferrous metals

aluminum and aluminum alloys, copper and copper alloys, etc.

non-metallic materials

plastics, rubber, coatings, plating, adhesives, tapes, etc.

 

 

2. test items

test items

interpretation of results

tensile test

tensile strength, yield strength, specified plastic elongation strength, elongation, sectional shrinkage, modulus of elasticity, n value, r value, poisson's ratio (provide sample cross-sectional area), etc.

impact test

absorbed energy, lateral expansion value, shear section rate.

bending test

observation after bending test, the specimen bending the outer surface with or without cracks

compression test

compression strength

tube process performance test

flattening test, flaring test, rolled edge test

fastener performance test

breaking torque, hydrogen embrittlement test, tensile strength of screws and bolts.

 

3. testing standards

sample name

test items

test standard name and number

plastic, rubber

tensile properties

astm d638-03

iso 527-2:2012

gb/t 1040.1-2006

plastic, rubber

compression properties

gb/t 1041-2008

iso 604:2002

plastic, rubber

bending properties

astm d790-03

iso 178:2001

gb/t 9341-2000

coated parts, plated parts

tapered shaft bending

gb/t 11185-2009

coated parts, plated parts

mandrel bending

gbt 6742-2007

rubber

compression permanent deformation

qc/t 709-2004

gb/t 10653-2001

iso 1856:1980

plastic

simply supported beam impact

astm d6110-04

iso 179-2:1997

gb/t 1043.1-2008

plastic

cantilever beam impact

astm d4812-1999

iso 180:2000

gb/t 1843-2008

plastic, rubber

shore hardness

gb/t 2411-2008

astm d2240-05

iso 7619-97

plastic, rubber

melt flow rate

astm d1238-04

iso 1133:1997

gb/t 3682-2000

plastic, rubber,coated parts, plated parts

straight wear-resistant

astm f2496

gme 60248

gme 60368

plastic, rubber,coated parts, plated parts

rotational wear resistance

astm d3884

astm d1175

iso 5470-1

iso 7784-2:1997

gb/t 1768-2006

astm d4060-2014

coated parts, plated parts

pencil hardness

astm_d3363-2005

gb/t 6739-2006

iso 15184-2012

ore, glass

mohs hardness

——

color-painted parts, varnished parts

coating (color paint, varnish) adhesion

astm d3359

gb/t 9286-1998

fltm bi 106-01

plastic, rubber

bonding strength

gb/t 15254-1994

gb/t 532-2008

jis k6256-1:2013

plastic, rubber

tear strength

gb/t 529-2008

iso 34-1:2010

bs iso 34-1:2010

astm d624-00(2012)

plastic, rubber

shear strength test

gb/t 7124-2008

plastic, rubber

peel strength

gb/t 2792-2014

plastic, rubber

rockwell hardness

gb/t 3398.2

 astm d785

iso 2039-2

plastic, rubber

ball pressure hardness

gb/t 3398.1

iso 2039

 

service process
q&a
 
question 1: the most commonly used equipment for mechanical experiments is the universal tensile testing machine, tensile testing machine can be used to test which experiments?
answer 1: material tensile testing machine for metal (including composite materials), rubber and plastic, adhesive materials, tensile, compression, bending, shear, peel, tear, load retention, and other static mechanical properties of the test analysis and research, with stress, strain, displacement three closed-loop control mode, the requirements can be sought out force value, tensile strength, peel strength, bending strength, compression strength, elastic modulus, elongation at break, yield strength and other parameters.
question 2: what are the common standards for metal hardness testing and what are the differences between each?
answer 2: there are two main types of test methods for metal hardness testing. one type is the static test method, and the application of test force in this type of method is slow and shockless. the determination of hardness is mainly determined by the depth of the indentation, the projected area of the indentation or the size of the indentation notch area. static test methods include brinell, rockwell, vickers, nurse, wechsler, and papertrey. among them, brinell, rockwell and vickers are the three most widely used test methods, and they are the main test methods for metal hardness testing. another type of test method is the dynamic test method, this type of method test force application is dynamic and impact. here include shore and richter hardness test methods.
question 3: the size of the permanent deformation of compression is an important indicator to measure the sealing performance and shock absorption performance of rubber products and the length of service life, what are the factors affecting the permanent deformation of vulcanized rubber compression?
answer 3: the factors affecting the compressive permanent deformation of vulcanized rubber are (1) the factors of rubber formulation, such as raw rubber species and additives species and dosage, both of which affect the cross-link density, which in turn affects the compressive permanent deformation; (2) the factors of processing, such as the dispersion of the compounding agent, the size of the cross-link bonding energy.
question 4: mechanical testing, how long after sending the sample can be issued a test report?
answer 4: the regular mechanical testing cycle is 7-10 working days, if you need to make samples or need additional aging test, you need to consider the sample making cycle and aging cycle separately.
our advantage
authoritative qualification
noa has been approved by certification and accreditation administration of the people’s republic of china(cnca)(cnca-r-2002-051), and has obtained qualification of china inspection body and laboratory mandatory approval (cma),and has passed the multiple approvals of china national accreditation service for conformity assessment (cnas), international accreditation service (ias), united kingdom accreditation service (ukas), joint accreditation system of australia and new zealand (jas-anz). noa has been approved by state administration for market regulation of china, and has been recognized as inspection and testing institution of china's special equipment, as well as the qualification of china's national equipment supervision and engineering supervision. noa-dci is the notified body of the ce directive of the european commission. noa has been recognized by the international electrotechnical commission (iecq) by obtaining electronic component quality assessment system. it is also a national inspection and assessment notified body of import and export commodity in china.noa is a high-tech enterprise in shanghai.
improve performance, realize asset value appreciation, and service throughout the entire value chain
from pre-design to post-operation, noa has the ability to guarantee the whole life cycle of the business. noa, as an independent third-party inspection company, has a large number of domestic and international standards and specifications proficient in design, welding, non-destructive testing, painting, packaging and other fields the experienced team of professional engineers and inspection experts, with more than ten years of experience in the domestic market, is familiar with all aspects of the domestic industrial equipment supply chain, and can provide you with technical support services for the full life cycle of technical services in a timely manner, combining various products. inspection, certification, testing, consulting, and auditing services can provide you with one-stop all-round comprehensive services.
quality, efficiency and service
noa has formed a mature and solid operation system in the development of more than 20 years. we let technical experts who are familiar with market regulations and testing standards and have professional industry experience to carry out inspection, evaluation and design review work. while meeting the requirements of domestic and international standards, we ensure that customers can obtain satisfactory service results in the first time with accurate time-sensitive management methods, and ensure that customers can seize the opportunity in the market competition.
service area
noa inspection services currently cover europe, australia, russia, some middle east regions and most regions in china. noa can ensure the consistency and continuity of customer service in different regions, and eliminate the impact of unfamiliar environments on customer quality. the guarantees and the impact of project implementation enable customers to participate in different markets across the country or around the world with flawless quality.
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