Higher Breaking Strength Research Articles

A Biomechanical Comparison of Gliding Resistance between Modified Lim Tsai and Asymmetric Tendon Repair Techniques in Zone II Flexor Tendon Repairs.

Background: Early active motion protocols have shown better functional outcomes in zone II flexor tendon lacerations. Different techniques of tendon repair have different effects on gliding resistance, which can impact tendon excursion and adhesion formation. For successful initiation of early active mobilisation, the repair technique should have high breaking strength and low gliding resistance. Previous studies have shown the Modified Lim-Tsai technique demonstrates these characteristics. The Asymmetric repair has also shown superior ultimate tensile strength. This study aims to compare the gliding resistance between the two techniques. Methods: FDP tendons from ten fresh frozen cadaveric fingers were randomly divided into two groups, transected completely distal to the sheath of the A2 pulley and repaired using either the Modified Lim-Tsai or Asymmetric technique. The core repair was performed with Supramid 4-0 looped sutures and circumferential epitendinous sutures were done with nylon monofilament Prolene 6-0 sutures. The gliding resistance and ultimate tensile strength were then tested. Results: The gliding resistance of the Asymmetric and Modified Lim-Tsai repair techniques were 0.2 and 0.95 N respectively. This difference was significant (p = 0.008). The Modified Lim-Tsai technique had a higher ultimate tensile strength and load to 2 mm gap formation, though this was not significant. Conclusions: Gliding resistance of the Asymmetric repair is significantly less than that of Modified Lim-Tsai. Ultimate tensile strength and load to 2 mm gap formation are comparable.

A new method for bio-degumming in less-water environment: Solid-state-fermentation progressive bio-degumming

Water saving and environmental protection is the key objective for material process. Bast fiber like flax and ramie was considered as sustainable resource for fiber. Degumming was the first and necessary process for abstracting fiber. Although bio-degumming was seen as energy saving and environmentally friendly method compared with conventional chemical process, considerable amount of water can be consumed and convert to waste water in traditional bio-degumming of bast fiber. In this investigation, the approach of bio-degumming was improved by combining of solid-state fermentation (SSF) method with deconstructing biomass recalcitrance, and a novel degumming method of solid-state-fermentation progressive bio-degumming (SPB) process was constructed for abstracting bast fiber with less water. The bio-recalcitrance of flax bast was break using cryogenic treatment and then the gum in flax bast was degraded with solid-state fermentation. Compared with conventional chemical degumming, more than 95% of Chemicals and 55% of water can be save in process of flax fiber with SPB method. Moreover, high quality flax fiber can be obtained in this SPB process and the degummed fiber have higher breaking strength (1.22 Mpa) and bigger molecular weight (105.7 kg/mol) than that obtained by chemical method (0.99 Mpa and 86.1 kg/mol). This SPB method also have obviously advantage that traditional bio-degumming base on liquid fermentation in consumption of water and production of waste water. Considering the mild temperature, the approach of SPB may provide a low-carbon and energy-saving technology for extracting fiber from bast plant. Thus, the SPB method presented in this study propose a novel strategy for process bast fiber in more green and sustainable way.

Comparison of the efficiency and modes of capture of biodegradable versus nylon gillnets in the Northeast Atlantic cod (Gadus morhua) fishery

Modern gillnets are usually made of nylon with high breaking strength, suitable elasticity and durability making them an efficient fishing gear. Lost, abandoned, or discarded gillnets at sea cause plastic pollution and can continue capturing marine animals over long periods of time. Biodegradable materials are being developed to replace nylon in gillnets. However, biodegradable gillnets have shown reduced catch efficiency compared to the nylon gillnets which challenges their acceptance by the fishing sector. This study investigated catch efficiency and modes of capture between biodegradable and nylon gillnets in commercial cod (Gadus morhua) fishery. On average, new biodegradable gillnets caught 25% fewer cod compared to new nylon gillnets. The main capture modes were by the gills and by the body in used and new biodegradable gillnets, respectively. Differences in catch efficiency are related to specific modes of capture that may be related to differences in material properties.

Foliar application uniconazole enhanced lodging resistance of high-quality indica rice (Oryza sativa L. ) by altering anatomical traits, cell structure and endogenous hormones

Lodging is an important limiting factor for increasing yield and quality in high-quality indica rice production. The objectives of this study were to explore the mechanism of lodging resistance in high-quality indica rice as affected by anatomical and cellular structure, especially its related endogenous hormone changes in culm tissue and response to foliar application uniconazole. Field experiments were conducted in Shanggao County, Jiangxi Province, China, by using two indica rice varieties Meixiangzhan2 (MXZ2) and Taiyou871 (TY871) with two foliar application uniconazole rates (0 mg L −1 , U 0 ; 80 mg L −1 , U 1 ) in 2019 and 2020. The results showed that the foliar application uniconazole affected the grain yield quite low, but decreased lodging index (LI) value with significant difference in both two varieties and years. Compared with U 0 treatments, U 1 treatments rapidly shortened length of basal internodes, especially for IN 4 , but affected length of upper internodes slightly, which resulted in reduction of length from breaking basal internode to top (SL) and bending moment by the whole plant (WP) value. The shorter cell length and denser cell arrangement under U 1 treatments, which were induced by lower endogenous indole acetic acid (IAA) and gibberellin A 3 (GA 3 ) content in culm tissue, declined the length of IN 4 internodes, plant height and center of gravity height. The higher breaking strength (M) was resulted from larger section- modulus (SM) of TY871 and higher bending stress (BS) of MXZ2, respectively. The elevated endogenous 1-aminocyclopropane-1-carboxylic acid (ACC) and zeatin (Z) content increased cell division in culm tissue and thus, raised the culm wall thickness, culm and leaf sheath cross sectional area and SM in basal internodes. Compared with U 0 treatments, U 1 treatments increased cell wall components including cellulose and lignin, starch, as well as higher BS in both TY871 and MXZ2. These results suggested that reduction of plant height and center gravity height were induced by shorter cell length and denser cell arrangement, which resulted from lower endogenous IAA and GA 3 in culm tissue. The foliar application uniconazole could enlarged culm wall thickness and SM by elevate endogenous ACC and Z content, and increase stem strength by higher carbohydrates including cellulose, lignin and starch and thereby, enhanced lodging resistance of high-quality indica rice. • Lodging resistance of high-quality indica rice was enhanced by shorter basal internodes with optimization cell structure. • Uniconazole shortened plant height and cell lengths due to decrease of endogenous GA 3 and IAA contents. • Uniconazole increased culm wall thickness and section-modulus owing to elevated endogenous ACC and Z content. • The uniconazole increased carbohydrates, e.g. cellulose, lignin and starch, and induced stronger stem strength.

Separation and Characterization of Cellulose Fibers from Cannabis Bast Using Foamed Nickel by Cathodic Electro-Fenton Oxidation Strategy.

Degumming is the most important link in the textile industry. The main purpose of degumming is to effectively remove non-cellulose substances in plant bast fibers. In this research, we propose an electro-Fenton (EF) system with a nickel-foam (Ni-F) cathode in weak acid pH (EF/Ni-F) to degum cannabis fiber in EF while reducing the content of pollutants in degumming wastewater. FT-IR, XPS, XRD, SEM, and TG were employed to thoroughly understand the reaction characteristics to characterize chemical components, element qualities, the crystallinity, and the morphologies of degummed fibers. Additionally, physical and mechanical properties such as breaking strength, elongation at breaking, residual glue rate, whiteness, and diameter of degummed fibers were measured. Through testing, it was found that the fiber degummed by the EF method had higher breaking strength, lower residual tackiness, and higher whiteness than other methods. The antibacterial test was used to detect the effect of fiber on Staphylococcus aureus before and after degumming. EF could remove more colloidal components from cannabis than other methods, and the mechanical properties were also enhanced. The characteristics of the degummed fiber further confirmed the effectiveness of the new degumming method. Moreover, the antibacterial experiment found that the antibacterial property of the degummed fiber was enhanced. The colloidal components in the degumming wastewater were flocculated and precipitated. The upper liquid of the solution had low chromaticity, low COD value, and weak acid pH value, which can meet the discharge requirements. The above test proves that EF is an effective degumming method that is environmentally friendly, takes less time, and enhances antibacterial performance.

Extremely Stretchable and Tough Piezoelectric Gels for Artificial Electronic Skin

AbstractPiezoelectric sensors and energy harvesters have received considerable interest due to their self‐powered capability and potential applications in various electronic devices. However, it is still a challenge to fabricate stretchable piezoelectric devices because piezoelectrics mainly consists of stiff crystalline structures. Here, extremely stretchable and tough piezoelectric gels are reported, which are prepared simply by swelling poly(ethylene glycol) (PEG)‐based poly(urethane‐urea) (PUU) gels with aqueous solution of molecular ferroelectrics. The hydrogen interactions between the PEG segments in the gels and the molecular ferroelectrics (dabcoHReO4, DH) enable well dispersion and crystallization of DH in the PEG segments. The resulted PUU/DH composite piezoelectric gels exhibit unique tensile mechanical properties, including superior strain (>1000%), high breaking strength (>10 MPa), modulus (>2 MPa), and toughness (>57 MJ cm−3). The extremely stretchable and tough piezoelectric gels show excellent piezoelectric properties (d33 ≈ 62 pC N−1 for films with a 10 wt% of DH and light transparency (>90%), and can quantitatively detect different mechanical deformations. Additionally, the energy generators can harvest mechanical energy with a power density of 1.7 µW cm−2. This work is expected to motivate new design principles for fabricating piezoelectric materials with excellent mechanical and piezoelectric properties for various applications.

Composition design and properties characterization for FeSiBCuC metallic glasses with large plasticity

Fe-based metallic glasses have low magnetic induction and inferior plasticity because of inevitable doping of non-magnetic constituents. The study proposes an innovative composition design strategy considering the nature of elements, binary eutectic, atomic configuration, and mixing entropy in the alloy system. A novel composition of Fe78.9B11.8Si7.6C1Cu0.7 was adopted, adding a total of only 8.3 wt% non-magnetic elements. The critical size of Fe78.9B11.8Si7.6C1Cu0.7 bulk metallic glass was ~1 mm, and an ultra-thick ribbon of ~150 µm was obtained by twin-roll strip casting. Excellent soft magnetic properties with high saturation magnetization (Bs) of 1.68 T and low coercivity (Hc) of 7.1 A/m outperformed current conventional counterpart. Meanwhile, the high breaking strength of 2654 MPa and distinctive plastic strain of 2%, normally less than 0.5% in most Fe-based metallic glasses, was demonstrated in Fe78.9B11.8Si7.6C1Cu0.7 bulk metallic glass. This novel alloy composition and design strategy is expected to facilitate the development of next-generation magnetic materials.

Changes in Blood Metabolites, Intestinal Microbiota Composition and Gene Expression of 95 Weeks Old Laying Hens Differing in Egg Production and Egg Breaking Strength.

Simple SummaryThe average cycle of laying hens is prolonged by improving one or more aspects, including genetics, nutrition, and management. Yet, this prolongation needs to go hand-in-hand with laying hens staying vital. Our objective was to explore hen vitality at an age of 95 weeks in association with performance parameters (egg production and breaking strength). To this end, we measured metabolism and disease indicators in blood, microbiota composition and diversity in different gut segments, and the biological activity of the small intestine. We observed that 12% of the hens developed certain aberrations. Additionally, five metabolites were significantly associated to these aberrations, and two metabolites to the performance parameters. In the small intestine we observed that in the production groups the physical barrier function was affected, whereas in the breaking strength group the immune function was affected. Taken together, these data show that hen vitality at later ages can still be improved and we provided data on a molecular level that could be used in future endeavors to improve animal health and welfare.Herein, we investigated to what extent molecular phenotypes of the systemic level (blood) and local (intestine) are associated with the performance of laying hens at 95 weeks of age. After the trial had run for 95 weeks, two performance groups were generated, i.e., egg production (PROD) and egg breaking strength (BS). A subset of 21 cages, 116 hens, was measured to indicate the metabolism and disease status. Additionally, a focus group (four cages) was made to perform molecular phenotyping in the intestine. A notifiable observation made during the post-mortem dissection was that approximately 12% of the birds at 95 weeks had developed certain aberrations and/or impairments (denoted as organ morbidity). At the systemic level, we observed five metabolites (γGT, triglycerides, HDL, glucose, and cholesterol) significantly associated to organ morbidity, and only two metabolites (urea and aspartate aminotransferase) to the performance phenotypes. At the local level, when comparing high PROD vs. low PROD, we observed differentially expressed genes involved in cell cycle processes and the extracellular matrix. When comparing high BS vs. low BS differentially, expressed genes were observed mainly involved in immune and cell cycle-related processes. This knowledge is crucial for developing novel strategies of keeping laying hens vital.

Evaluation of the Bonding Strength between Various Dental Zirconia Models and Human Teeth for Dental Posts through In Vitro Aging Tests

In dentistry, root canal treatment reduces support of the tooth, making it necessary to insert a cylindrical body into the treated tooth to strengthen the crown. In the past, metal or fiberglass was often used. However, metal is too different in color from teeth, so the esthetics are poor, and fiberglass is not as strong as metal. Therefore, an alternative is zirconia, which has the characteristics of high light transmittance, esthetics, good biocompatibility, and high breaking strength. The surface morphology and composition of zirconia ceramics are the key to their bond strength with teeth. Therefore, in this study, the surface characteristics of different brands of zirconia commonly used in clinical practice were evaluated in terms of their surface morphology and surface elements. The surface was modified by sandblasting, and its effect on the bonding strength was discussed. Finally, the stability of the material was evaluated through artificial aging. The results showed that the surface roughness of the zirconia specimens increased after sandblasting, whereas the surface microhardness decreased. The shear test results showed that the 3D shape of the zirconia surface could help improve the bonding strength. The bonding strength of DeguDent increased the most after sandblasting. After 20,000 cycles of aging treatment, the shear strength of each specimen decreased. Field emission scanning electron microscopy results showed that the adhesive remained intact on the surface of zirconia, indicating that adhesion failure occurred between the adhesive and the teeth. This confirms that sandblasting can improve the bonding strength of zirconia. Based on the results obtained, it was concluded that the surface roughness of zirconia is the main factor affecting the bond strength.

Investigation of the effect of ghrelin on bone fracture healing in rats.

Ghrelin is known to have effects on proliferation and differentiation of osteoblasts and improvement of bone mineral density in rats. However, no experimental research on ghrelin's effects on fracture healing has been reported. In this context, the effect of ghrelin on the union of femoral shaft fractures was examined in this study by evaluating whether ghrelin will directly contribute to fracture healing. Forty male Wistar-Albino rats were divided into two groups as control and experimental (ghrelin treated) and standard closed shaft fractures were created in the left femurs of all rats. Daily ghrelin injections were applied to the experimental groups and equal numbers of rats were killed after 14 and 28days following fracture formation. Tissue samples were examined with radiological, biomechanical, biochemical and histological analyses. Densitometry study showed that bone mineral density was improved after 28days of ghrelin treatment compared to control. On histological examination, at the end of the 14 and 28days of recovery, significant union was observed in the ghrelin-treated group. The ghrelin-treated group had higher breaking strength and stiffness at the end of 28days of recovery. Biochemically, ALP levels were found to be higher in the ghrelin-treated group at the end of 28days of recovery. Results showed that ghrelin directly contributes to fracture healing and it is promising to consider the effect of ghrelin on fracture healing in human studies with pharmacological applications.

A Dwarfing Gene sd1-d (Dee-geo-woo-gen dwarf) on Lodging Resistance and Related Traits in Rice

A dwarfing allele at the sd1 locus on chromosome 1 in rice, sd1-d, has been playing important role for developing lodging-resistant and high-yielding indica varieties IR8 and IR36. The dominant allele SD1 for long culm at the locus is differentiated into SD1-in and SD1-ja that are harbored in indica and japonica subspecies, respectively. The sd1-d of IR36 was substituted with SD1-in or SD1-ja by 17 backcrosses with IR36, and two isogenic tall lines were developed by using an indica variety IR5867 and a japonica one ‘Koshihikari’ as donors, which were denoted by “5867-36” and “Koshi-36’’, respectively. The present study was conducted to examine the effect of dwarfing gene sd1-d on lodging resistance and related traits, compared with SD1-in and SD1-ja. Two isogenic lines and IR36 were cultivated in the field of the Faculty of Agriculture and Marine Science, Kochi University, Japan during 2017. Regarding index of lodging (g·cm/g × 100), genotypes were in the order: 5867-36 (97.4) > Koshi-36 (74.1) > IR36 (46.0) on the 21st-day after 80%-heading, and they were in the same order on 10th-day after 80%-heading. The 4th-panicle length (cm) was in the order: 5867-36 (118.7) > Koshi-36 (97.6) > IR36 (78.6). Similarly, the 4th-top weight (g) was in the order: 5867-36 (12.2) > Koshi-36 (10.2) > IR36 (9.6). The highest breaking strength (g) was recorded in IR36 (1649) followed by 5867-36 (1493) whereas the lowest breaking strength (g) was recorded in Koshi-36 (1360). Consequently, it is inferred that sd1-d enhances lodging resistance due to the decreases in the length and weight above the 4th-internode as well as the increase of breaking strength. The effect of SD1-in on lodging resistance is lower than that of SD1-ja.

Analysis of Adhesion Effect of Solution on Cotton Fibers in Adhesive-aided Ring Spinning

The adhesive-aided ring spinning (AARS) which takes advantage of wetting and adhesion of solution on fibrous strand to re-twist fiber ends into yarns, thus optimizes the yarn formation during spinning process. To investigate the adhesion effect in the AARS, CMC-Na and PAM/PVA were chosen as the basic and auxiliary adhesive respectively to explain the interaction mechanism between fibers and solution. The analysis of solution performance in terms of the similar polarity with cotton fiber proves that the adhesive force goes up with the increase of surface tension when it is under 98 mN/m, while, the lower surface tension contributes to a better wetting effect. The appropriate adhesive solutions including CMC-Na/PAM solution and CMC-Na/PVA solution complete the desired adhesion effect due to the analysis of the attachment amount of solution on fibrous strand during AARS process. In addition, the adhesive solution makes fibers on the surface of fibrous strand stick tighter and decreases the yarn diameter by up to 8.6 %. The experimental results state that both better wetting effect and adhesive force are crucial to achieve a better adhesion effect and that it is the key for improving yarn performance. The AARS yarns have less hairiness, higher breaking strength and stronger abrasion resistance, and the data also verify the analysis of adhesion effect.

Effects of soy flour types and extrusion-cooking conditions on physicochemical, microstructural and sensory characteristics of puffed rice snack base

AbstractThe physicochemical properties of puffed rice snack base (PRSB) prepared via extrusion cooking under various feed moisture contents and screw speeds were investigated. The moisture content, screw speed, and soy flour type significantly (p < 0.05) affected the physicochemical properties of PRSB viz; size, density, porosity, color, breaking strength, crystallinity, water absorption index (WAI) and water solubility index (WSI). While, a slight effect on pasting properties was observed between PRSB added with defatted and full-fat soy flour, respectively. Soy flour lipids significantly (p < 0.05) influenced extrusion cooking conditions especially at high screw speed and feed moisture content. The result revealed that extrusion cooking with addition of full-fatty soy flour can be exploited as a viable method to produce PRS with a high expansion ratio and low breaking strength at recommended extrusion conditions of feed moisture content of 19 % and screw speed of 300 rpm.

Simultaneous low‐salt dyeing and anti‐bacterial finishing of cotton fabric with reactive dye and N‐halamine

AbstractA reactive dye, Novacron Deep Orange S‐4R, and an anti‐bacterial precursor, 4‐(4‐(2,2,6,6‐tetramethyl‐4‐piperidinol)‐6‐chloro‐1,3,5‐triazinylamino)‐benzenesulphonate, both of which are monohalogenated‐s‐triazine–based compounds, were chosen for the simultaneous dyeing and anti‐bacterial finishing of cotton fabric. To effectively reduce the emissions of pollutants and the dosage of sodium sulphate added during dyeing and finishing, a cationisation reagent, 2,3‐epoxypropyltrimethylammonium chloride, was used to modify cotton fabric before dyeing and finishing. The cationised cotton fabrics obtained 0.18% active chlorine loadings and good dye depth after the simultaneous dyeing and finishing process with low addition of sodium sulphate. The chlorinated fabrics inactivated all inoculated Staphylococcus aureus (Gram‐positive) and Escherichia coli (Gram‐negative) within 10 minutes of contact. The treated cotton fabric maintained high breaking strength as well as good washing stability.

Strain-Induced Form Transition and Crystallization Behavior of the Transparent Polyamide.

A transparent polyamide, poly(4,4′-aminocyclohexyl methylene dodecanedicarboxylamide) (PAPACM12), was studied and characterized by in situ wide-angle X-ray diffraction (WAXD) to establish the relationship between its crystallization behavior, crystalline form transition under external fields, and macroscopic properties. During the heating process, cold crystallization occurred and increased, and there was no form transition below the melting point. During the isothermal process, PAPACM12 exhibited the same crystalline structure as that during the heating process. The crystalline structure of PAPACM12 was attributed to α-form crystal, which is the stable form, according to the WAXD diffraction peaks of the conventional AABB-type polyamides. During stretching deformation, the crystal transition from α-form to γ-form and strain-induced crystallization were observed to contribute to the PAPACM12 with higher breaking strength and elongation. This study firstly determine the crystalline structure of transparent polyamides, and then the controlled strain-induced crystallization and transformation are demonstrated to be effective preparation methods for polyamides with high properties.

Preparation of different scale firous membranes and their filtration properties

In this work, the polyacrylonitrile monolayer/composite nanofibrous membranes were successfully fabricated at different processing parameters. As expected, compared with monolayer membranes, the composite membrane revealed high breaking strength, high breaking elongation, high porosity, and good filtration performance. The composite method used in this article also provides new ideas for designing filter materials.

Investigating the Lifetime of Fibre Ropes

Steel wire ropes have established as transmission, connection and safety elements in transporters such as cranes and elevators, due to their high breaking strength and operational safety as well as out of many years of experience. However, steel wire ropes have disadvantages such as high dead weight, high bending stiffness and sensitivity to corrosion. Increasing requirements on the energy-efficient and resource-saving operation of technical systems demand new materials, technologies and processes. As a result, textile machine elements like HM-HT fibre ropes (high modulus, high tenacity) come into focus of considerations. The aim of the research is to expand the level of knowledge with regard to the state of wear and aging. Another aim is to find out the influencing factors on the lifetime, discard criteria of high-strength fibre ropes and to derive methods for lifetime detection.

Governance implications for the implementation of biodegradable gillnets in Norway

Gillnets are among the most widely used fishing gear in global fisheries because of their simplicity, high operability, catch efficiency and low entrance cost for fishermen. In Norway, the Northeast Atlantic (NEA) cod (Gadus morhua) fishing industry represents the most important economic single species fishery and the gillnet fishery accounts for 24% of the national total allowable catch (TAC) of NEA cod. Despite the importance of the gillnet fishery in Norway, significant amounts of gillnets are lost at sea each year. As gillnets are made of synthetic materials (i.e. nylon) with high breaking strength and durability, lost, abandoned and/or discarded fishing gear (LADFG) continues catching target and non-target species for years. This phenomenon, known as "ghost fishing", cause negative impact on the benthic marine environment and to the fisheries management. Over the last years, the development of biodegradable gillnets to replace traditional nylon gillnets has become particularly sought after in fisheries worldwide. However, biodegradable gillnets are less efficient and more expensive than traditional nylon gillnets. As the urgency to eliminate the negative environmental impacts of LADFG increases, a crucial question remains how to successfully implement biodegradable gillnets to replace the more efficient nylon gillnets currently used in commercial fisheries. In this article we investigate how central elements of fisheries management may be used to implement biodegradable gillnets and how this may challenge the current resource allocation policy among different gear- and vessel groups.

Novel chemical degumming process and its effect on structure and properties of mulberry fibres

A novel chemical degumming (Fibre-N) method has been used to extract fibres from the bark of mulberry plant. Fibres obtained by a new method (Fibre-N) are characterized by the X-ray diffraction, scanning electron microscopy, Fourier transform Infrared spectroscopy, residual gum content, fibre yield, and mechanical property measurement. Fibre-N method exhibits 17.71% lower residual gum content, 37.18% higher breaking strength, 18.36% higher breaking elongation and 10.81% higher fibre yield. Fibre-N process used to extract fibres from mulberry plant is more economical and efficient, which could be used as a promising method for producing textile yarns, nonwovens, and composites.

Extremely Tough, Puncture-Resistant, Transparent, and Photoluminescent Polyurethane Elastomers for Crack Self-Diagnose and Healing Tracking.

Ensuring material performance reliability and lifetime is crucial for practical operations. Small cracks on the material surface are often detrimental to its safe operation. This study describes the development of a hydrogen bond-rich puncture-resistant polyurethane elastomer with supertoughness. The as-prepared polyurethane transparent films feature high tensile break strength (57.4 MPa) and great toughness (228 MJ m-3). Additionally, a facile, low-cost, crack self-diagnostic approach through photoluminescence using a small luminous pen is reported. The materials efficiently achieved self-healing at 90 °C after the crack formation. The change of fluorescence intensity on the crack can be used to track the self-healing process. Therefore, this work provides a guideline for the material design of supertough, puncture-resistant, transparent, and healable elastomers and a crack self-diagnosis and healing approach.