Strength of materials

The article investigates the potential of using sea sand and seawater from Ha Tien City, Kien Giang Province, in geopolymer concrete production. Geopolymer concrete is an environmentally friendly material that can help reduce greenhouse gas emissions while utilizing locally available resources.

5p vibenya 31-12-2024 6 1   Download

In this study, a new method for analyzing safety factor (Fs) of natural slopes was developed. Rigid-plastic constitutive equation for soil materials and a slope stability analysis framework were formulated to account for both soil properties and slope geometry (slope angle β and slope height H).

6p vibenya 31-12-2024 3 1   Download

This study comprehensively analyzes the impact of temperature and curing time on the compressive strength of geopolymer concrete made with locally sourced sea sand and seawater. The research aims to utilize abundant regional materials while reducing the environmental footprint associated with traditional construction practices.

5p vibenya 31-12-2024 3 1   Download

Metal forming to make large parts, take large reductions, use high strength materials, work to net shape (precision flashless closed die forging), and use cold forming to obtain certain physical properties all require high forming forces. These forces may be larger than the capacity of existing machinery.

33p vcuong222 13-05-2015 56 4   Download

Chapter 5 - Geometric properties of an area. The following will be discussed in this chapter: First moment of area, moment of inertia for an area, moment of inertia for some simple areas, parallel - axis theorem.

21p larachdumlanat122 28-11-2020 23 2   Download

Lecture Strength of Materials I - Chapter 7: Bending. The following will be discussed in this chapter: Introduction, bending stress, shearing stress in bending, strength condition, sample problems, deflections of beam, statically indeterminate beams.

58p larachdumlanat122 28-11-2020 43 2   Download

Lecture Strength of Materials I - Chapter 1: Introduction – Concept of stress. The following will be discussed in this chapter: Review of static, equilibrium of deformable body, concept of stress, stress under general loadings, strain, types of loading, assumptions, principle superposition.

63p larachdumlanat122 28-11-2020 50 1   Download

Chapter 2 - Axial force, shear force and bending moment. The following will be discussed in this chapter: Internal stress resultants; relationships between loads, shear forces, and bending moments; graphical method for constructing shear and moment diagrams; normal, shear force and bending moment diagram of frame.

41p larachdumlanat122 28-11-2020 30 1   Download

Chapter 3 - Axially loaded members. The following will be discussed in this chapter: Normal stress and normal strain, tension and compression test, poisson’s ratio, shearing strain, allowable stress – factor of safety, statically indeterminate problem.

43p larachdumlanat122 28-11-2020 32 1   Download

Chapter 4 - State of stress and strength hypothese. The following will be discussed in this chapter: State of stress at a point, plane stress, mohr’s circle, special cases of plane stress, stress – strain relations, strength hypotheses.

33p larachdumlanat122 28-11-2020 26 1   Download

Lecture Strength of Materials I - Chapter 6: Torsion. The following will be discussed in this chapter: Introduction, torsional loads on circular shafts, strength condition and stiffness condition, statically indeterminate problem, strain energy, examples.

28p larachdumlanat122 28-11-2020 18 1   Download

This research investigates a means of negating such shortcomings and reaping the benefits of both LPBF additive manufacturing and traditional manufacturing methods by joining such parts together using laser welding in the autogenous mode (no fillers required). Based on the literature review conducted in this field and the gaps identified, a two-stage methodology was utilised, as per following.

191p runthenight04 02-02-2023 7 5   Download

Steel fiber reinforced concrete (SFRC) is a multiple-composite material developed during the early 1970s. In SFRC, short steel fibers are randomly distributed in concrete. Steel fibers can prevent the development of micro-cracks inside the concrete and reduce the expansion and development of the macro-cracks, thus enhance mechanical performance of SFRC. However, there is lack of studies on the influence of flowability of fresh SFRC on the steel fiber distribution patterns and mechanical properties of hardened SFRC.

85p runthenight04 02-02-2023 8 4   Download

Studying, analyzing and evaluating the basic factors affecting the wear resistance of the shear cutting drum, such as coal strength, the geometry of the cutting teeth, materials of cutting teeth, the cutting angle. Cutting depth, cutting feed and cutting speed are the basis for selecting the appropriate factors in fabrication, using the cutting teeth of the shearer.

27p closefriend09 16-11-2021 22 2   Download

Manufacture composite based on epoxy reinforced by glass fiber with organ – modified nanosilica using organotitanate curing agent that have good mechanical strength, thermal stability, flame restraint ability; improve the toughness of epoxy resin by incorporating reinforcing agent such as organ – modified nanosilica and glass fiber with appropriate manufacturing condition and ratio.

28p capheviahe26 25-01-2021 31 3   Download

This work presents a stress-strain state analytical estimation of restored tooth hard tissues with consideration of their contact interactions with a monolithic filling or a dental onlay.

12p tohitohi 19-05-2020 11 1   Download

In-plane strength and constitutive properties of composite materials is known as crucial problems. Although, several studies have been made for obtaining the in-plane mode II properties, the common test fixtures are blind in confrontation of shear zone. Furthermore, toughening mechanisms and consequently mode II fracture toughness cannot be evaluated, precisely.

16p tohitohi 19-05-2020 10 0   Download

Portland cement concrete (PCC) / asphalt concrete (AC) bonded components are seen in both conventional pavement structures as well as overlays. Due to the environmental and traffic loads, cracks occur at the interface of the PCC and AC layers and finally, may propagate through the interface or one of the layers.

14p tohitohi 19-05-2020 21 3   Download

The use of cement concrete as a stronger and more durable material than asphalt concrete in construction of the pavements has been increased during the past decades. This review paper investigates the effect of various input variables for the design of continuously reinforced concrete pavements.

16p tohitohi 19-05-2020 9 0   Download

The article discusses the strength of concrete and other brittle materials in the case of nonuniform biaxial type of compression (σ1 > σ2 > 0) and triaxial compression of σ1 > σ2 = σ3 > 0  type (it was assumed that σ> 0 corresponds to compression). I

6p tohitohi 19-05-2020 17 0   Download