Results 71 to 80 of about 4,851 (264)
Business Strategy and the Environment, EarlyView.ABSTRACT Sustainability reports (SRs) are widely criticized for vague disclosures and selective emphasis on positive outcomes, yet systematic research on two core SR challenges remains limited: materiality (whether disclosed content is relevant) and balance (whether both achievements and challenges are reported).
Mahsa Mohammadrezaei +1 more
wiley +1 more source
Cyclic Ratcheting Resistance of Buried Pipelines
, 2017 Upheaval buckling (UHB) is a common issue for high pressure and high temperature (HPHT) pipelines. The out-of-straightness (OOS) of the buried pipelines combined with the high axial compressive forces induced by the extreme operating conditions causes ...
S. K. Haigh +3 more
core +2 more sources
Tribological Study of Chisel Knives in Sandy Soil
Agriculture, 2023 This paper presents the interaction system within the mechanical soil processing process, consisting of two large elements, the metal of the tool and the soil. Due to the two main forces acting on the chisel knives—friction and impact with the sandy soil—
Laurențiu Constantin Vlăduțoiu +6 more
doaj +1 more source
ISSUES RELATED TO RATCHETING IN PIPING COMPONENTS [PDF]
, 1999 PresentationMaterial and piping component test data involving ratcheting are discussed in regards to the phenomenon of shakedown. The data set studied indicates that the general belief about the occurrence of shakedown after a few cycles of ratcheting ...
Hassam, Tasnim
core
Bending Ratcheting Tests of Z2CND18.12 Stainless Steel
, 2010 A series of ratcheting experiments under bending loading for Z2CND18.12 stainless steel were carried out on a dynamic mechanical analyzer. The characteristic of progressive inelastic deformation of the material in the different temperatures and different
Fei Xue +3 more
core +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT Adopting a signaling perspective, this study examines whether corporate green patenting reduces the cost of equity by mitigating information asymmetry in capital markets. Using longitudinal panel data from South Korea, we find that green patenting—encapsulating technological innovation related to energy, environmental protection, and climate ...
Jeongdae Yim, Su‐Yol Lee
wiley +1 more source
Photoreversible Polyurea Actuators With Spatiotemporal Control and Adaptive Mechanics
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A light–thermal responsive polyurea network incorporating reversibly dimerizable anthracene units enables spatiotemporal modulation of cross‐linking density and nearly 400‐fold stiffness tuning. Integrating programmable anisotropy, photopatterning, self‐healing, and photowelding within a single framework, this bioinspired “one network–multifunction ...
Zhiwen Song +7 more
wiley +1 more source
Fractal and FractionalWithin the framework of elastoplastic theory, this study develops and improves a fractional cyclic constitutive model capable of describing rate-dependent ratcheting behavior by defining the ratcheting parameter as a function of the cumulative plastic ...
Xuehong Ren +5 more
doaj +1 more source
Self-loosening behavior of bolt in curvic coupling due to materials ratcheting at thread root
Advances in Mechanical Engineering, 2019 This article presents the bolt self-loosening mechanism in curvic coupling due to the structural ratcheting under cyclic loading. Finite element simulations are carried out under several loading conditions with different preloads and cyclic torque ...
Xiangjun Jiang +3 more
doaj +1 more source
A new four-dimensional ratcheting boundary : derivation and numerical validation [PDF]
, 2018 A new four-dimensional ratcheting boundary is derived analytically for the first time considering the interaction among four types of stresses: constant mechanical membrane stress, mechanical bending stress, cyclic thermal membrane stress, and thermal ...
Shen, Jun +5 more
core +1 more source