Advances in tailored hot stamping – innovations in material and local patchwork topology

Hot stamping is now commonplace in the automotive industry. The continuing need by automotive manufacturers to reduce weight while increasing crashworthiness has driven the industry to seek new hot stamping solutions. Tailored hot stamping can be thought to produce a part that has patchwork of hard and soft regions. In this context, patchwork means that there is a relational organization (topology) to the network of hard and soft regions. The next generation of tailored hot stamping will therefore combine new steel grades together into a single part, and secondly will be able to locally tailor material properties to meet detailed engineering targets. The key to meeting engineering demands will be how the patchwork material properties are organized on the part. This paper will briefly outline our latest research in tailoring parts.

Effect of susceptibility to interfacial fracture on fatigue properties of spot-welded high strength sheet steel

While advanced high strength steels (AHSS) have numerous advantages for the automotive industry, they can be susceptible to interfacial fracture when spot-welded. In this study, the susceptibility of interfacial fracture to spot-weld microstructure and hardness is examined, as well as the corresponding relationships between fatigue, overload performance, and interfacial fracture for a TRIP (transformation induced plasticity) steel. Simple post-weld heat-treatments were used to alter the weld microstructure. The effect on interfacial fracture of diluting the weld pool by welding the TRIP material to non-TRIP steel was examined, along with the effect of altering the base material microstructure. Results show that weld hardness is not a good indicator of either the susceptibility to interfacial fracture, or the strength of the joint, and that interfacial fracture does not necessarily lead to a decrease in strength compared to conventional weld-failure mechanisms, i.e. button pullout. It was also found that while interfacial fracture does affect low cycle to failure behavior, there was no effect on high cycle fatigue.

Characteristics of electron beam welded Ti & Ti alloys

Similar and dissimilar butt joint welds comprising combinations of commercially pure grade 4 titanium (CP-Ti), Ti-6Al-4V (Ti-64) and Ti-5Al-5V-5Mo-3Cr (Ti-5553) were created using the electron beam process. The resultant welds were studied by means of metallography, optical microscopy, mechanical testing and scanning electron microscopy. Mechanical testing was performed on welded samples to study the joint integrity and fracture characteristics. A scanning electron microscope investigation was performed on the fracture surface to reveal their fracture modes. While all weldments were crack free and most weldments exhibited mechanical properties comparable to the base metal, negligible ductility was exhibited during tensile testing joints of Ti- 5553 welded to either Ti-64 or Ti-5553.

Small businesses as social formations : diverse rationalities in the context of e-business adoption

Small-business adoption of electronic business has been analyzed largely in conventional business terms such as benefits and costs, returns on investment, and competitive advantage. While these factors are important, small businesses are also embedded in social contexts which shape the rationalities with which they approach e-business. These rationalities are different from those that characterize larger businesses. They involve personal relationships, social esteem, lifestyle issues, and family considerations. Drawing on the theoretical work of Granovetter and Weber, this chapter examines interview data from a number of Australian studies of e-commerce by small businesses. These interviews illustrate the influence of the social context on the adoption (or deferral) of e-commerce. By recognizing that small businesses are social as well as economic formations, governments can tailor their programs to assist this important group of businesses in their approach to e-business.

Public and stakeholder values of wildlife in Victoria, Australia

This paper explores the management implications of a recent study that was designed to explore public and stakeholder values of wildlife in Victoria, Australia. Questionnaires (n = 1431) were used to examine values and knowledge of wildlife held by residents from seven Victorian municipalities and members of six wildlife management stakeholder groups. The results suggest that most Victorians have a relatively strong emotional attachment to individual animals (the humanistic value) and are interested in learning about wildlife and the natural environment (the curiosity/learning/interacting value). In comparison, the negativistic, aesthetic, utilitarian-habitat and dominionistic/wildlife-consumption values were not expressed as strongly. These findings suggest that wildlife managers should expect support for wildlife management objectives that reflect the relatively strong humanistic orientation of Victorians and tailor management and education programs to appeal to this value and Victorians' interest in learning about wildlife.

Defining fraud: issues for organizations from an information systems perspective

Fraud is one of the besetting evils of our time. While less dramatic than crimes of violence like murder or rape, fraud can inflict significant damage at organizational or individual level.

Fraud is a concept that seems to have an obvious meaning until we try to define it. As fraud exists in many different guises, and it is necessary to carefully define what it is and to tailor policies and initiatives accordingly.

Developing a definition of fraud is an early step of a prevention program. In order to be involved in the protection function, people at all levels of an organization must be knowledgeable about fraud. In this paper, we discuss the risk of fraud from an information systems perspective, explain what fraud is and present a range of definitions of fraud and computer fraud. We argue that without clearly defining fraud, organizations will not be able to share information that has the same meaning to everyone, to agree on how to measure the problem, and to know the extent of the problem, in order to decide how much and where to deploy resources to effectively solve it.

Taxation threat, motivational postures, and responsive regulation

The central proposition of motivational posturing theory is that regulatees place social distance between themselves and authority, communicating the nature of that distance through a narrative that protects the self from negative appraisal by the authority. One of the key components of posturing is the coping sensibility that individuals adopt to manage the threat of authority. At a baseline level, authorities make demands on citizens and as such threaten individual freedom. At the highest level, authorities threaten through punishment for non-compliance. Data collected from 3,253 randomly selected Australian taxpayers and a special group of 2,292 taxpayers in conflict with the tax authority are used to show that in both groups, three coping sensibilities contribute to posturing ("thinking morally,""feeling oppressed," and "taking control"), and that all three sensibilities are significantly heightened in the group experiencing conflict with the authority. The article argues that the most effective regulatory outcome is achieved when the regulatory process can dampen the "taking control" and "feeling oppressed" sensibilities, and strengthen the "thinking morally" sensibility. Responsive regulation is an approach that encourages tax authorities to read motivational postures, understand the sensibilities that shape them, and tailor a regulatory intervention accordingly.

Rules and resources: a structuration approach to understanding the coordination of childrens`s inpatient health care

Aim. This paper presents findings from a multi-method study exploring the process of care coordination in children's inpatient health care.

Background. Existing work on care coordination is typified by 'black-box' type studies that measure inputs to and outcomes of care coordination roles and practices, without addressing the process of coordination.

Method. Using questionnaires, interviews and observation to collect data in multiple sites in the United Kingdom and Denmark between 1999 and 2005, the study gathered the perceptions of staff and compared these with observed practice. Giddens' structuration theory was used to provide an analytical and explanatory framework.

Findings. Current care coordination practice is diverse and inconsistent. It involves a wide range of clinical and non-clinical staff, many of whom perceive a lack of clarity about who should perform specific coordination activities. Staff draw upon a wide range of different material and non-material resources in coordinating care, the use of which is governed by largely tacit and informal rules.

Conclusions. Care coordination can be usefully conceptualized as a 'structurated' process – one that is continually produced and reproduced by staff using rules and resources to 'instantiate' or bring about care coordination through action. Potentially negative implications of this are manifested in diversity and inconsistency in care coordination practice. However, positive aspects such as the opportunity this provides to tailor care to the needs of the individual patient can be realized.