This study was conducted to determine drought tolerance genotypes with superiority in different stressed environments. To screening quantitative indices of drought tolerance, genotypes of safflower (Carthamus tinctorius L.) were tested in a complete randomized block design with three replications under two different water regimes (irrigated and rainfed). Significant positive correlatio...

By exploiting snap-through instabilities, D. Pasini and co-workers design a damage-tolerant mechanical metamaterial that snaps sequentially under tension, thereby accommodating a very large deformation up to 150%. On page 5931, they describe how the nonlinear mechanical response of the metamaterial can be robustly programmed by tuning the architecture of its unit cell.

This report discusses architectures for safety-critical sysems. The report summarises the existing literature in the area as well as the guidance provided by existing safetycritical system development standards. We discuss the three constituent functions of fault tolerant architectures: error detection, damage assessment and confinement and error recovery. We also consider methods for fault pre...

MEMS deformable mirrors with thousands of actuators are under development for space-based operation, which require fault tolerant actuators that will not fail due to electrical overstress. We report on advances made in the development of MEMS deformable mirror actuators with enhanced reliability for space-based, high-contrast imaging instrumentation that eliminate irreversible actuator damage r...

This study shows that dehydration induces imbalanced metabolism before loss of membrane integrity in desiccation-sensitive germinated radicles. Using a photoacoustic detection system, responses of CO(2) emission and fermentation to drying were analyzed non-invasively in desiccation-tolerant and -intolerant radicles of cucumber (Cucumis sativa) and pea (Pisum sativum). Survival after drying and ...

To assist in damage tolerant analyses for composites, a compact tension T650/5320 laminate composite was characterized via in-situ X-ray tomography during cyclic loading. A 3D image processing analysis of the fatigue crack growth illustrated various mechanisms, including intralaminar cracking (dominant) and delamination facilitating ply cross-over. finite element conducted to compute change sto...

From the premise that desiccation-induced damage is associated with a free-radical mechanism of injur\. we address the hypothesis thai expression of desiccation damage is dependent on metabolism. The effects of temperature and O, concentration on the expression of damage were studied in germinating bean [Phaseoius vuigaris L. cv. Pole Kentucky Wtinder) axes and maize {Zea mavs L. cv. Kelvedon G...

Fracture mechanics data from fiber-reinforced polymer-matrix (FRP) composites are required for damage-tolerant design. Quantifying scatter is essential determining design limits. Scatter affected by the “human factor”, i.e., process and test operator actions. Intrinsic manufacture, processing environment shall be preserved; extrinsic specimen preparation, set-up, measurement resolution, analysi...

This study was conducted to determine drought tolerance genotypes with superiority in different stressed environments. To screening quantitative indices of drought tolerance, genotypes of safflower (Carthamus tinctorius L.) were tested in a complete randomized block design with three replications under two different water regimes (irrigated and rainfed). Significant positive correlatio...