Attrezzature di prova per materiali

Nel settore dell’ingegneria strutturale si è alla continua ricerca di materiali che presentino basse densità ed al contempo buona resistenza, buona rigidezza, buon comportamento all’abrasione ed all’impatto e che non siano facilmente soggetti a fenomeni di corrosione. La conoscenza delle caratteristiche meccaniche e fisiche di un materiale è il primo passo per una corretta valutazione delle prestazioni in esercizio del componente.

Nelle attività di ricerca e sviluppo sono frequentemente richieste attrezzature/accessori per l’esecuzione di prove sperimentali che non costituiscano il corredo standard delle macchine di prova.

Le attrezzature standard commercializzate, in accordo con le normative UNI, EN, ISO, ASTM, DIN, BS, AF, sono realizzate in acciaio al carbonio, in acciaio inossidabile o in leghe metalliche (leghe di nichel) in modo da conferire al prodotto elevate prestazioni, anche a temperature elevate e minimizzare effetti indesiderati quali corrosione e ossidazione nelle normali condizioni ambientali di laboratorio.

  • ASTM C363 Testing Fixture

    Download PDF This test method covers the determination of the delami- nation strength (tensile node-to-node bond strength) of honey- comb core materials. Following the possible choices to be ordered.   Test Standard ASTM C363 Maximum Load 4,5 kN Temperature Range da -80 °C a 149 °C Mounting  1/2”-13 threaded couplings … Leggi tutto

  • Biaxial Test Fixture

    Download PDF Biaxial Test Fixture has been developed and PATENTED by Sòphia for loading an in-plane specimen simultaneously in two principal directions. Fixture is designed for use with an universal testing machine Use of the fixture should require no modifications of the test machine Alignment of the fixture should be considered … Leggi tutto

  • SPECIMEN TABBING FIXTURES

    Download PDF There are four strips of tabbing material to maintain in proper alignment. A typical fixture consists of two plates, aligned with each other via pins in the base plate that slip into close-fitting mating holes in the cover plate. Usually the plates are manufactured of high-strength, anodized aluminum, … Leggi tutto

  • ASTM C297 2″ BLOCKS TESTING FIXTURE

    Download PDF This test method, performs a through-the-thickness tensile test of a sandwich panel. The supports upper and lower bonding blocks, which make up the equipment, have oscillating end. For attachment to the test machine, the fixings provided are standard connections type of DM (“male studs with diameter 0.50″ 1.25 … Leggi tutto

  • ASTM D2290 TESTING FIXTURE

    Download PDF Split disk and ring segment tensile tests, properly interpreted, provide reasonably accurate information with regard to the apparent tensile strength of plastic pipe when employed under conditions approximating those under which the tests are made. ASTM Standard D 2290 originally included several procedures for testing ring specimens. Procedure … Leggi tutto

  • TENSILE WEDGE GRIP INSERTS

    Download PDF Wedge grip inserts of all types, in all sizes and load capacities to fit all existing wedge grip bodies, can be provided, including custom designs for special applications. While machined serration grip faces, either straight- or cross-serrated, are very popular, grip faces covered with tungsten carbide particles are … Leggi tutto

  • ASTM D3167 TESTING FIXTURE

    Download PDF This test method covers the determination of the relative peel resistance of adhesive bonds between one rigid adherend and one flexible adherend when tested under specified conditions of preparation and testing. Usually the thickness of the sheets is shown in material specification. If the thickness is not stated, … Leggi tutto

  • RESIN CASTING MOLDS TESTING FIXTURE

    Download PDF To characterize the mechanical properties of the polymer to be used as the matrix material in a new composite material system it is often necessary. Thermoset polymer specimens can often be cast to finish dimensions in open molds.

  • NASA 90-DEGREE PEEL TESTING FIXTURE

    Download PDF This fixture is designed to maintain a constant peel angle of 90 degrees, as an upper sheet is peeled from the rest of a honeycomb panel. Using this fixture can be tested other structures consisting of a flexible face sheet and a more rigid substrate. Are recommended face … Leggi tutto

  • ASTM D905 TESTING FIXTURE

    Download PDF This test method can be used to determine the adhesive bond shear strength between other adherends as well. The basic testing principle is similar to that of the ASTM D 4501 Block-Shear Test Method. The standard specimen consists of two blocks, each 1.75” high and 2” wide, bonded … Leggi tutto

  • ADAPTERS, LOCKS RINGS AND PINS

    Download PDF Locking rings, adapters, and brooches of any configuration, to adapt specific test equipment to every type of mechanical or servo-hydraulic test machine. Every sistem can be customized according to Customer needs.

  • ASTM D897 Testing Fixture

    Download PDF To help maintain the axial alignment load, usually universal joints are used in traction load applications. Can be designed and manufactured universal joints of all the final attack configurations and the load capacity. Usually, the material chosen for the realization of joints is 17-4 PH stainless steel, with … Leggi tutto

  • STANDARD TENSILE WEDGE GRIPS

    Download PDF   Sophia High Tech provides a wide range of tensile wedge grips to perform your testing. Elevated and reduced temperature tensile test procedures are available. Tensile tests measure the force required to break a plastic sample specimen and the extent to which the specimen stretches or elongates to that breaking point. … Leggi tutto

  • ASTM D4501 TESTING FIXTURE

    Download PDF   This test method describes a procedure and fixture used to determine shear strengths of adhesives used to bond materials with moduli higher than the modulus of the adhesive. The size and shape of the specimens are variable within the physical restraints of the fixture. Two blocks of … Leggi tutto

  • ASTM A497 & A185 TESTING FIXTURE

    Download PDF   This testing device is used to determine the shear strength of the welds of welded wire fabric. As it regards the two standards ASTM A 497 and ASTM A 185, there are no substantial differences, for this reason they use the same test fixture. From the wire … Leggi tutto

  • ASTM D1329 TESTING FIXTURE

    Download PDF This method describes the temperature retraction procedure for rapid assessment of crystallization effects. In addition, it serves to compare the properties of the viscoelastic rubber materials at low temperatures and gummy. This method is very useful to make a selection of materials suitable for low-temperature service. A small … Leggi tutto

  • ASTM D1414 TESTING FIXTURE

    Download PDF These test methods provide acceptable procedures for quality control purposes and for the determination of engineering characteristics. The equipment consists of two pulleys which  stretch the O-ring to failure. To minimize the local stresses induced in the sample due to frictional forces, the standard provides that a spool … Leggi tutto

  • ASTM D882 TESTING FIXTURE

    Download PDF In general, the thin sheet to be tested, plastic or metal film or sheeting up to 0.040 “in thickness, is held by the line of contact at each end between the flat reinforcing plates and the eccentric rolls. To facilitate the installation of the specimen cylinders have a … Leggi tutto

  • ASTM C307 TESTING FIXTURE

    Download PDF The equipment is composed of lower and upper handles, which are equal. Its purpose is to determine the resistance to traction of briquettes special form of mortar, mortar and other similar materials of monolithic lining. The stop plates on the grips center the specimen fore and aft. Through … Leggi tutto

  • ASTM F519 Testing Fixture

    Download PDF Since they have enlarged ends and reduced central cross sections, Split collar grips are typically used to tensile test round bar specimens. To aid in minimizing induced bending in the specimen, can be built  spherical seats. There are a wide variety of specimen sizes and configurations in use. … Leggi tutto

  • ASTM C297 1″ BLOCKS TESTING FIXTURE

    Download PDF Upper and lower bonding blocks of the equipment are realized each with a double yoke arrangement. This conformation is made in order to allow full alignment of the sample during tensile load. On the testing machine there is an attachment standard 1.25″ diameter male studs with 0.50″ diameter … Leggi tutto

  • ASTM D1623 TESTING FIXTURE

    Download PDF Foam tests and foam testers provide a standard method of obtaining data for research and development, quality control, acceptance or rejection under specifications, and special purposes. Type A specimens are used when enough sample material exists to form the necessary specimen. Type B is preferred when smaller specimens … Leggi tutto

  • SPLIT CAPSTAN GRIPS

    Download PDF To tensile test cordage,  rope, flat strapping and similar flexible materials that might be otherwise difficult to grip without creating undesirable stress concentrations and premature failures, typically are used split capstan grips. Depending on your needs, it is possible to configure the capstan grips. To hold the sample, … Leggi tutto

  • SIMPLE TENSILE WEDGE GRIPS

    Download PDF Every type of grip is designed and manufactured in accordance with the ASTM rules. The basic types of mechanical wedge grips are two. In both cases the gripping members move and wedges remain stationary while it is clamped on the sample, or wedges move tightening the sample and … Leggi tutto

  • NASA 1092 TESTING FIXTURE

    Download PDF This type of NASA compression after impact (CAI) of compression of the test device is an alternative to the more popular Boeing compression after the compression of the device of the impact test. The NASA devices are 10 ” long and 5″ in width. As in Boeing method, … Leggi tutto

  • NAI-1504C TESTING FIXTURE

    Download PDF The untabbed sample is 3 “long, 1” wide, and the thickness can vary depending on the material and layup in the testing phase. Northrop Specification recommended thicknesses from 0.125 “to 0.250”. The standard sample contains a central “diameter hole 0.25, even if the unit has proved effective, even … Leggi tutto

  • AITM1-0010 TESTING FIXTURE

    Download PDF This common method in aerospace concerns compression tests on plates, rolled experimentation multidirectionaldetermination of the post-impact compressive strength. The methodis also useful for the compression tests after impact on composite materials, the company has acquired a new realization of controlled impact machine. The impact receiving sample is placed … Leggi tutto

  • ASTM SRJ-D638 TESTING FIXTURE

    Download PDF Tensile tests measure the force required to break a plastic sample specimen and the extent to which the specimen stretches or elongates to that breaking point. ASTM D-638 tensile test procedure: Specimens are placed in the grips of the universal tester at a specified grip separation and pulled … Leggi tutto

  • ASTM D7078 TESTING FIXTURE

    Download PDF Shear Test Fixtures are designed for in-plane or interlaminar shear testing of composite materials. The V-Notched Beam Method, or more commonly known as the Iosipescu Shear Method, was standardized into ASTM D5379 in 1993, while the V-Notched Rail Shear Method was more recently introduced in 2005 under ASTM … Leggi tutto

  • BS EN 455-2 – PUNCH TESTING FIXTURE

    Download PDF BS EN 455-2 describes the testing requirements for determination of physical properties, including break strength, before and after accelerated aging, of medical gloves for single use, surgical gloves, examination/procedure gloves, long-cuff medical gloves, and seemed/welded gloves. For this test, we recommend either pneumatic grips side acting grips or … Leggi tutto

  • ASTM D6484 Testing Fixture

    Download PDF This test method is designed to produce notched compressive strength data for structural design allowables, material specifications, research and development, and quality assurance. Factors that influence the notched compressive strength and shall therefore be reported include the following: material, methods of material fabrication, accuracy of lay-up, laminate stacking … Leggi tutto

  • ASTM D1781 TESTING FIXTURE

    Download PDF This procedure is useful for the determination of the peel resistance of adhesive bonds adhering a relatively flexible and adhering rigid; and the relatively flexible coating of a sandwich structure and its nucleus, to the test under the specified conditions. This standard does not purport to address all … Leggi tutto

  • ASTM D732 TESTING FIXTURE

    Download PDF ASTM D 732, defines a punch-type of shear test. This test method covers the procedure for determining the shear strength of composite materials in the form of sheets, plates, and molded shapes. The thicknesses of specimen can range from 0.050” to 0.500”. A disc from 1” diameter will be drilled … Leggi tutto

  • ASTM D412 TESTING FIXTURE

    Download PDF This method covers the effect of the application of a tension load to vulcanized rubber and similar rubber-like material at room temperature and elevate temperature. Covered are tests for tensile stress, tensile strength, ultimate elongation and set. The method is not applicable to the testing of material ordinarily … Leggi tutto

  • ASTM D395 TESTING FIXTURE

    Download PDF This test methods is useful for the test of rubber that should be used in applications in which the rubber will be subjected to compressive stresses in air or liquid media. For example in machinery mountings, vibration dampers, and seals. Two test methods are provided and covered in … Leggi tutto

  • ASTM D638 A TESTING FIXTURE

    Download PDF The fixture was designed in relation to the test method expressed in ASTM D638 designation. This method has been realized to produce tensile properties data for the control and specification of the plastic materials. The collection of these data is useful for the qualitative characterization and for research and … Leggi tutto

  • ASTM D2344 TESTING FIXTURE

    Download PDF This system establishes the short-beam strength of reinforced composite materials with high modulus. The specimen is a short beam machined from a curve or a plate rolled up to 6,00 mm [0.25 in.] thick. The beam is loaded in three-point bending. Application of this test method is limited … Leggi tutto

  • ASTM D4255 A TESTING FIXTURE

    Download PDF This test method indicates the cutting properties in the plane of a high modulus fiber-reinforced composite materials by two procedures. As regards the procedure A, laminates stuck between two pairs of loading rails are tested. When the tension load is applied to the rails, shear forces arise in … Leggi tutto

  • ASTM D4255 B TESTING FIXTURE

    Download PDF This test method indicates the cutting properties in the plane of a high modulus fiber-reinforced composite materials by two procedures. As regards the procedure A, laminates stuck between two pairs of loading rails are tested. When the tension load is applied to the rails, shear forces arise in … Leggi tutto

  • ASTM D5379 TESTING FIXTURE

    Download PDF This fixtures has been designed for in-plane or interlaminar shear testing of composite materials. The V-Notched Beam Method, better known as Iosipescu Shear Method, was standardized into ASTM D5379 in 1993. For this test method V-notches specimen design is used in order to create a localized and approximate … Leggi tutto

  • ASTM D7137 TESTING FIXTURE

    Download PDF Knowledge of the damage resistance and damage tolerance properties of a laminated composite plate is useful for product development and material selection. The residual resistance data obtained by this test method will be used in the specification of materials and research and development. The properties obtained using this … Leggi tutto

  • ASTM D6415 TESTING FIXTURE

    Download PDF This fixture is useful to indicate the curved beam strength of a continuous fiber – reinforced composite material. For the test run it is necessary to use a curved beam sample 90 ° that has to be positioned for the four-point-bending test apparatus in order to be loaded. … Leggi tutto

  • ASTM D7269 TESTING FIXTURE

    Download PDF These test methods cover the tensile testing of aramid threads, twisted cables from these yarns and fabrics from these cables. The yarn or cord can be wound on cones, tubes, coils, chokes, or beams; It can be woven into fabric; or they can be realized in some other … Leggi tutto

  • ASTM D638 B TESTING FIXTURE

    Download PDF ASTM D638  tensile tests measure the force required to break a plastic sample specimen and the extent to which the specimen stretches or elongates to that breaking point. Tensile test procedure: Specimens are placed in the grips of the universal tester at a specified grip separation and pulled … Leggi tutto

  • ASTM C273 B TESTING FIXTURE

    Download PDF A sandwich panel or the core material itself can be tested  in shear parallel to the flatwise plane. The fixture can be used to apply either a tensile or a compressive loading, although a tensile loading is most commonly utilized in order to eliminate buckling as a potential … Leggi tutto

  • ASTM C273 A TESTING FIXTURE

    Download PDF A sandwich panel or the core material itself can be tested  in shear parallel to the flatwise plane. The fixture can be used to apply either a tensile or a compressive loading, although a tensile loading is most commonly utilized in order to eliminate buckling as a potential … Leggi tutto