Tensile testing

In this paper, the tensile performance of 3D printed continuous fiber reinforced thermoplastic materials is investigated. Continuous carbon fiber and Polyethylene terephthalate glycol (PetG) are employed as reinforcement and matrix, respectively. Pure solid plastic infill, unidirectional fiber infill, and +45/-45 fiber infill patterns specimens are selected for printing and testing.

9p dathienlang1012 03-05-2024 1 0   Download

"Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures" covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450°F. For temperatures above 450°F and up to 650°F, only Grade 60–40–18 castings are suitable

8p hth_hn_vn 10-12-2023 7 5   Download

"Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service" covers several grades of minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.

6p hth_hn_vn 10-12-2023 11 4   Download

This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Castings are classified on the basis of the tensile strength of the iron in separately cast test bars.

6p hth_hn_vn 10-12-2023 4 4   Download

"Standard Specification for Cupola Malleable Iron" covers malleable irons for castings made by the cupola process. Without knowledge of casting geometry and process details, quantitative relationships cannot be stated between the properties of the iron in the various locations of a casting and those of a test bar cast from the same iron.

4p hth_hn_vn 10-12-2023 7 3   Download

"Standard Specification for Pearlitic Malleable Iron" covers pearlitic malleable iron castings for general engineering usage at temperatures from normal ambient to approximately 750°F [400°C]. For continuous service at temperatures up to 1200°F [650°C] design factors should be incorporated to compensate for possible property changes, as demonstrated by Marshall and Sommer2 and by Pearson.

5p hth_hn_vn 10-12-2023 7 3   Download

"Standard Specification for Steel Wire, Music Spring Quality" covers two types of round, cold-drawn steel music spring quality wire, uniform in mechanical properties, intended especially for the manufacture of springs subject to high stresses or requiring good fatigue properties. The values stated in either SI units or inch-pound units are to be regarded separately as standard.

5p hth_hn_vn 10-12-2023 10 5   Download

This specification also covers a group of supplementary requirements which may be applied to the above specifications as indicated herein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.

4p hth_hn_vn 10-12-2023 9 5   Download

This specification covers minimum requirements for steel fibers intended for use in fiber-reinforced concrete. Five types of steel fibers for this purpose are defined as pieces of smooth or deformed cold-drawn wire; smooth or deformed cut sheet; melt-extracted fibers; mill-cut or modified cold-drawn wire steel fibers that are sufficiently small to be dispersed at random in a concrete mixture.

4p hth_hn_vn 10-12-2023 6 4   Download

This specification covers uncoated, high-strength, hard-drawn steel wire for use in the construction of prestressed concrete tanks and similar structures. In application, the wire is continuously wrapped on the structure maintaining tension by a device using a wire drawing die, or mechanical tensioning system without re-drawing.

4p hth_hn_vn 10-12-2023 6 4   Download

Part 1 of ebook "Textile fibre composites in civil engineering" provides readers with contents including: materials, production technologies and manufacturing of textile fibre composites for structural and civil engineering; testing, mechanical behaviour and durability aspects of textile fibre composites used in structural and civil engineering;...

205p thamnhuocgiai 24-09-2023 9 4   Download

Part 1 of ebook "Mechanical engineering principles" provides readers with contents including: revision of mathematics; revisionary mathematics; statics and strength of materials; the effects of forces on materials; tensile testing; forces acting at a point; simply supported beams; forces in structures; bending moment and shear force diagrams; first and second moments of areas; bending of beams; twisting of shafts;...

153p hanlinhchi 29-08-2023 3 1   Download

The article reports upon the preparation and characterization of organo-functionalized NieAl layered double hydroxide (LDH)-polystyrene (PS) nanocomposites. Initially, pristine NieAl LDH was synthesized via the co-precipitation technique and was subsequently treated using sodium dodecyl sulfate to obtain organo-functionalized NieAl LDH (ONieAl LDH).

10p viberbers 09-08-2023 5 3   Download

This project investigates the use of free radical initiators in the recycling of post consumer recycled high density polyethylene using reactive extrusion. Both molecular and rheological characterisation of recycled and reprocessed materials was carried out and this was followed by tensile testing of the modified materials to satisfy end use applications such as packaging and drainage piping.

154p runthenight07 01-03-2023 4 2   Download

The authors studied a novel thermal cycling test under tensile loading of the round-notched bar type specimen, using Gleeble test machine. In this kind of testing the mechanism of the DDC is thought to be different from the earlier observations and hypotheses.

6p vicedric 08-02-2023 6 3   Download

Blend solutions of poly(ε-caprolactone) (PCL) and N-(2-hydroxy)-propyl-3-trimethylammonium chitosan chloride (QCh) were successfully electrospun. Tensile tests revealed that the nonwovens present a good balance between elasticity and strength under both dry and hydrated state. Results indicate that the PCL/ QCh electrospun nonwovens are new nanofibers-based biomaterials potentially useful as wound dressings.

12p vihermione 06-01-2023 3 2   Download

One of the main trends in developing bio-based materials is to improve their mechanical and physical properties using MFC derived from sustainable natural sources and compatible low-cost chemicals. The strength of anionic MFC based materials can be increased with addition of multivalent cations.

5p vihermione 06-01-2023 6 2   Download

Small specimens of spruce wood with different degrees of delignification were studied using in-situ tensile tests and simultaneous synchrotron X-ray diffraction to reveal the effect of delignification and densification on their tensile properties at relative humidities of 70–80 %. In addition to mechanical properties, these analyses yield the ratio of strains in the cellulose crystals and in the bulk, which reflects the stress-transfer to crystalline cellulose.

10p viginny 30-12-2022 6 2   Download

In this study, the effectiveness of high alite cement (HAC) in improving cracking and the quality of covercrete of slag concrete is investigated. The cracking resistance ability is examined via the tensile strength of concrete, while the surface water absorption test is applied to study the quality of covercrete. The results reveal the capacity of HAC in improving the tensile strength of slag concrete.

4p vijaguar 16-11-2022 8 1   Download

Tensile properties of strain-hardening fiber-reinforced concrete are the key engineering parameters in determining bending resistance of the material. In this paper, an analytical model to predict tensile properties of ultra-high-performance fiber-reinforced concrete, a type of strain-hardening fiber-reinforced concretes, was performed based on single fiber pullout test.

13p vimclaren 12-10-2022 4 2   Download